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Physics

Edexcel2024

Question

Physics

CAIE2024

(cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:6)(cid:44) (b) There is a uniform magnetic field of flux density 0.18 T into the plane of the page. (i) State Lenz’s law of electromagnetic induction. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (ii) Show that the time taken for point X to complete one revolution is 45 ms. [1] (iii) Calculate the magnetic flux cut by spoke AX during one revolution of the wheel. Give a unit with your answer. magnetic flux = .................................... unit ............ [3] (iv) Determine the magnitude of the electromotive force (e.m.f.) induced across spoke AX. induced e.m.f. = ...................................................... V [2] (v) Use Lenz’s law to explain whether the potential is higher at end A or end X of the spoke. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [1] [Total: 13] © UCLES 2024 (cid:300) (cid:300) (cid:207) (cid:236) (cid:266) (cid:186) (cid:190) (cid:249) (cid:288) (cid:217) (cid:180) (cid:285) (cid:237) (cid:265) (cid:200) (cid:255) (cid:245) (cid:213) (cid:207) (cid:256) (cid:298) (cid:248) (cid:197) (cid:244) (cid:266) (cid:241) (cid:222) (cid:198) (cid:250) (cid:225) (cid:183) (cid:249) (cid:256) (cid:288) (cid:215) (cid:258) 9702/42/O/N/24 [Turn over (cid:293)(cid:213)(cid:229)(cid:213)(cid:245)(cid:213)(cid:261)(cid:277)(cid:181)(cid:181)(cid:293)(cid:261)(cid:197)(cid:213)(cid:197)(cid:181)(cid:197)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000006 *

Question

Physics

CAIE2024

2 4 6 8 10 12 h / 106 m Fig. 1.1 (i) By reference to forces, explain why the orbit of the satellite is circular. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (cid:300)(cid:205)(cid:266)(cid:190)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:221)(cid:249)(cid:184)(cid:256)(cid:215) © UCLES 2024 (cid:300)(cid:224)(cid:191)(cid:251)(cid:216)(cid:288)(cid:255)(cid:278)(cid:227)(cid:244)(cid:263)(cid:268)(cid:261)(cid:281)(cid:209)(cid:177)(cid:280)(cid:258) 9702/43/O/N/24 (cid:293)(cid:213)(cid:245)(cid:213)(cid:245)(cid:181)(cid:229)(cid:181)(cid:293)(cid:293)(cid:245)(cid:197)(cid:261)(cid:277)(cid:261)(cid:181)(cid:197)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000005 *

Question

Physics

Edexcel2024

ΔE = mcΔθ ΔE = LΔm Gravitational fields Molecular kinetic theory Gravitational force

Question

Physics

Edexcel2024

3 Gm m mác2ñ = kT F = 1 2

Question

Physics

CAIE2024

(cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:8)(cid:44) (i) Explain why the two wires exert a magnetic force on each other. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (ii) On Fig. 7.2, draw an arrow to show the direction of the magnetic force exerted on wire X. Label your arrow F. [1] (iii) The current in X is double the current in Y. State how the magnetic force exerted on wire Y compares with the magnetic force exerted on wire X. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (iv) The direction of the current in both wires is now reversed. State, with a reason, the effect of this change on the direction of the force on wire X. ........................................................................................................................................... ..................................................................................................................................... [1] [Total: 11] © UCLES 2024 (cid:300) (cid:300) (cid:207) (cid:224) (cid:266) (cid:190) (cid:190) (cid:252) (cid:288) (cid:211) (cid:180) (cid:292) (cid:237) (cid:290) (cid:200) (cid:247) (cid:245) (cid:228) (cid:207) (cid:248) (cid:298) (cid:241) (cid:197) (cid:239) (cid:266) (cid:263) (cid:224) (cid:278) (cid:252) (cid:242) (cid:182) (cid:257) (cid:260) (cid:288) (cid:215) (cid:258) 9702/43/O/N/24 [Turn over (cid:293)(cid:197)(cid:293)(cid:213)(cid:245)(cid:245)(cid:197)(cid:277)(cid:261)(cid:261)(cid:229)(cid:197)(cid:197)(cid:245)(cid:229)(cid:181)(cid:293)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000018 *

Question

Physics

CAIE2024

2 4 6 8 10 12 h / 106 m Fig. 1.1 (i) By reference to forces, explain why the orbit of the satellite is circular. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (cid:300)(cid:205)(cid:266)(cid:190)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:221)(cid:252)(cid:184)(cid:256)(cid:215) © UCLES 2024 (cid:300)(cid:223)(cid:286)(cid:251)(cid:208)(cid:286)(cid:244)(cid:244)(cid:225)(cid:257)(cid:267)(cid:269)(cid:215)(cid:187)(cid:188)(cid:210)(cid:284)(cid:258) 9702/41/O/N/24 (cid:293)(cid:181)(cid:181)(cid:213)(cid:181)(cid:277)(cid:261)(cid:245)(cid:261)(cid:261)(cid:229)(cid:261)(cid:197)(cid:213)(cid:229)(cid:213)(cid:261)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000005 *

Question

Physics

Edexcel2024

The electrostatic force between the two charges is initially F. The charge on S is doubled whilst the charge on S is unchanged. The distance between

Question

Physics

Edexcel2024

Which of the following vector diagrams shows the forces acting on S ?

Question

Physics

Edexcel2024

A toy car moves up a slope at a constant speed, as shown. The car is moved by a motor with a power output of 5.2 W. The car gains a gravitational potential energy of 0.40 J in a time of 1.1 s. Which of the following expressions gives the work done, in J, against resistive forces? A 5.2 − (0.40 × 1.1) B (5.2 × 1.1) − 0.40 C (5.2 ÷ 1.1) + 0.40 D (5.2 × 1.1) + 0.40 (Total for Question 3 = 1 mark) *P74468A0224* 

Question

Physics

Edexcel2024

2 Which of the following is the new force on S ?

Question

Physics

CAIE2024

(cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:2)(cid:8)(cid:44) (i) Explain why the two wires exert a magnetic force on each other. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (ii) On Fig. 7.2, draw an arrow to show the direction of the magnetic force exerted on wire X. Label your arrow F. [1] (iii) The current in X is double the current in Y. State how the magnetic force exerted on wire Y compares with the magnetic force exerted on wire X. ........................................................................................................................................... ........................................................................................................................................... ..................................................................................................................................... [2] (iv) The direction of the current in both wires is now reversed. State, with a reason, the effect of this change on the direction of the force on wire X. ........................................................................................................................................... ..................................................................................................................................... [1] [Total: 11] © UCLES 2024 (cid:300) (cid:300) (cid:207) (cid:223) (cid:266) (cid:287) (cid:190) (cid:252) (cid:288) (cid:219) (cid:180) (cid:290) (cid:237) (cid:269) (cid:200) (cid:273) (cid:245) (cid:226) (cid:207) (cid:261) (cid:298) (cid:237) (cid:197) (cid:298) (cid:266) (cid:213) (cid:224) (cid:184) (cid:249) (cid:283) (cid:182) (cid:290) (cid:260) (cid:292) (cid:215) (cid:258) 9702/41/O/N/24 [Turn over (cid:293)(cid:229)(cid:229)(cid:213)(cid:181)(cid:213)(cid:293)(cid:213)(cid:293)(cid:293)(cid:245)(cid:261)(cid:261)(cid:181)(cid:261)(cid:213)(cid:229)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000018 *

Question

Physics

Edexcel2024

A film involves a gang of bank robbers making a getaway on a bus loaded with gold bars. The bus spins out of control and ends up balancing on the edge of a cliff, as shown. (Source: © maforche/Shutterstock) (a) State what is meant by the moment of a force about a point. (1) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (b) The bus is balanced on a pivot that is a distance y from the centre of the bus. The centre of mass of the gold is 1.5 m from one end of the bus. The centre of mass of the bank robbers is 1.0 m from the other end of the bus, as shown.

Question

Physics

CAIE2024

0.2 0.4 0.6 0.8 1.0 1.2 t / s –0.01 –0.02 Fig. 5.2 (a) On Fig. 5.1, draw an arrow, from the centre of the sphere, to represent the direction of the resultant force acting on the sphere when it is in the position shown. [1] (cid:300)(cid:209)(cid:266)(cid:190)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:222)(cid:250)(cid:184)(cid:256)(cid:215) © UCLES 2024 (cid:300)(cid:236)(cid:188)(cid:249)(cid:207)(cid:293)(cid:297)(cid:275)(cid:211)(cid:260)(cid:254)(cid:227)(cid:237)(cid:176)(cid:232)(cid:297)(cid:296)(cid:258) 9702/42/O/N/24 (cid:293)(cid:213)(cid:293)(cid:277)(cid:245)(cid:245)(cid:229)(cid:181)(cid:213)(cid:293)(cid:197)(cid:197)(cid:261)(cid:245)(cid:293)(cid:245)(cid:229)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD PMT * 0000800000013 *

Question

Physics

Edexcel2024

An object was thrown so that it followed the path shown. Assume drag forces were negligible. The object was thrown with an initial vertical component of velocity u. The time taken to reach maximum height is t. Which of the following could not be used to determine the maximum vertical height s reached by the object?

Question

Physics

Edexcel2024

A square coil has sides of length l and carries a current I, as shown. The plane of the coil is parallel to a magnetic field of flux density B. Q R magnet magnet coil P S North I South Which row of the table gives the magnetic force on the named side of the coil? Named side Magnetic force A PQ BIl to the left B QR BIl to the right C RS BIl upwards D SP BIl downwards (Total for Question 6 = 1 mark)

Question

Physics

Edexcel2024

C F D 2F (Total for Question 5 = 1 mark) *P74468A0324* 

Question

Mathematics

Edexcel2023

4 2 colourless brown (a) The table shows values of ΔG at different temperatures for this reaction. Temperature / K ΔG / kJ mol–1 350 –4.0 400 –13 450 –22 500 –31 550 –40 (i) Plot a graph of ΔG against temperature. (2) ΔG / kJ mol–1 Temperature / K 

Question

Mathematics

Edexcel2023

6 I Cl  ICl+ + ICl–

Question

Mathematics

Edexcel2023

4 2 colourless brown (1) Position of equilibrium Change in colour A moves to the right mixture gets lighter B moves to the right mixture gets darker C moves to the left mixture gets lighter D moves to the left mixture gets darker (Total for Question 5 = 7 marks) 

Question

Mathematics

Edexcel2023

*P71912A0628* PMT

Question

Physics

Edexcel2023

*P71915A01328*  Turn over DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD PMT (ii) Complete the free‑body force diagram for support rod X. (2) weight of cable (b) A website gives a value of the electric field strength E, at two distances from the electric cable. Distance / m E / N C–1

Question

Physics

Edexcel2023

P = t v2 = u2 + 2as W P = t Forces useful energy output efficiency = ∑F = ma total energy input F g = useful power output m efficiency = total power input W = mg moment of force = Fx Momentum p = mv Turn over *P71915A02428* DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD PMT Electric circuits Waves and particle nature of light Potential difference Wave speed W v = f λ V = Q Speed of a transverse wave on a string Resistance T V v = R = μ I Intensity of radiation Electrical power and energy P P = VI I = A P = I 2R Power of a lens V 2 P = 1 R P = f W = VIt P = P + P + P + …

Question

Physics

Edexcel2023

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%&'()*"+,"-(."/"-(0(1*/#',"*(2!3)(4"'(!5#6%4,%

( %%&'()*! && 7#89-"(1%%"%%8"':(;#:"4#-%(<(=%%>"(?(<(@,:&A"(BC?D(E(!"#%&'()*>,#:4&'(.484:"*(BC?D Turn over PMT !"! "#

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5(0#!! of (cid:22).(cid:25) (cid:80) and is fi(cid:91)ed at the end la(cid:69)elled (cid:59). (cid:44)t is s(cid:88)pported at position (cid:60) (cid:90)hich is 0.(cid:28) (cid:80) fro(cid:80) (cid:59). (cid:55)he di(cid:89)ing (cid:69)oard is (cid:88)nifor(cid:80) and has a (cid:90)eight of (cid:22)(cid:28)0 (cid:49). (cid:37)(cid:92) ta(cid:78)ing (cid:80)o(cid:80)ents a(cid:69)o(cid:88)t (cid:59)(cid:15) deter(cid:80)ine the (cid:88)p(cid:90)ard force e(cid:91)erted (cid:69)(cid:92) the s(cid:88)pport at (cid:60) ,5!0#!%&.&5(!6,')%7 #% 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777! 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777 ;,)<$!=! !777777777777777777777777777777777777777777777777777777777777777777

Question

Mathematics

Edexcel2023

Benzoic acid is a weak acid found in cranberries. OH C O C H COOH – benzoic acid

Question

Mathematics

Edexcel2023

6 2 4 What is the most likely numerical value of K for this equilibrium? c (1) A 1.0 × 106 B 5.0 × 103 C 1.0 D 5.0 × 10–3 (Total for Question 3 = 9 marks) 

Question

Mathematics

Edexcel2023

7 4 It is neutralised by sodium hydroxide solution in a similar way to benzoic acid. A 25.0 cm3 sample of 0.500 mol dm–3 quinic acid solution was neutralised under standard conditions in a polystyrene cup using 25.0 cm3 of

Question

Physics

Edexcel2023

*P71915A01728*  Turn over DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD PMT (b) An advert for an electric car has the following information: • electric motor can develop up to 390 kW output power • car achieves a velocity of 28 m s–1 from rest in 4.0 s at maximum power Calculate the work done by resistive forces when the car accelerates to a velocity of

Question

Physics

Edexcel2023

m s–1 from rest in 4.0 s. mass of car = 1950 kg (3) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. Work done by resistive forces = .............................................................. (c) A website suggests that ‘fast‑charging’ the battery in an electric vehicle can increase the internal resistance of the battery. Explain why an increase in internal resistance of a battery is a disadvantage. (3) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (Total for Question 16 = 12 marks) *P71915A01828* DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD PMT

Question

Mathematics

Edexcel2023

The graph shows the melting temperatures of some elements in Period 3. 1800 1600 1400 1200 Melting 1000 temperature / K 800 600 400 200

Question

Physics

Edexcel2023

The plan view of a model racing car track is shown. Friction acts between a model racing car and the track. A car is moving round the track with a constant speed and reaches point P. Arrows indicating directions North and South are also shown. N track S P The car then slides off the track at P. Which of the following is the reason why the car slides off the track? A The centripetal force is acting in the N direction. B The centripetal force is acting in the S direction. C The frictional force is equal to the centripetal force. D The frictional force is not large enough. (Total for Question 5 = 1 mark) *P71915A0428* DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD AERA SIHT NI ETIRW TON OD PMT

Question

Mathematics

Edexcel2023

5 (a) Which of these answers identifies the types of species present when benzoic acid is mixed with nitric acid? [K of benzoic acid = 6.3 × 10–5 mol dm–3; K of nitric acid = 40 mol dm–3] a a (1) C H COOH + HNO  C H COOH+ + NO–

Question

Mathematics

Edexcel2023

3 Ionisation energy

Question

Mathematics

Edexcel2023

Question

Mathematics

Edexcel2023

6 2 4 (i) Draw a labelled diagram of a simple experiment to confirm this dissociation has occurred, stating the positive result. (2) Result .................................................................................................................................................................................................................................................................. (ii) What is the shape of the ICl– ion?

Question

Mathematics

Edexcel2023

5 3 6 5 2 3 A acid base acid base B acid base base acid C base acid base acid D base acid acid base (b) The ionic salts sodium benzoate and potassium benzoate are both used as food preservatives. Explain why the melting temperature of sodium benzoate is higher than the melting temperature of potassium benzoate. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... 

Question

Physics

Edexcel2023

5(cid:80) 12(cid:80) (cid:55)he pla(cid:92)er stands 12 (cid:80) fro(cid:80) the net. (cid:43)e thro(cid:90)s the (cid:69)all (cid:89)erticall(cid:92) (cid:88)p(cid:90)ards and hits the (cid:69)all at a height of 2.5 (cid:80) a(cid:69)o(cid:89)e the gro(cid:88)nd. (cid:55)he (cid:69)all lea(cid:89)es the rac(cid:78)et #

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Question

Physics

Edexcel2023

5 m support rod Y column The masses of support rods X and Y are negligible. (a) (i) Determine, by taking moments, the force exerted on rod X by rod Y. (4) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. Force = ..............................................................

Question

Mathematics

Edexcel2023

This question is about the bonding and structure of molecules. (a) Which element exists as discrete molecules in its solid state? (1) A aluminium B iodine C silicon D sodium (b) Which compound has non-polar molecules? (1) A ammonia B carbon dioxide C hydrogen sulfide D water (c) Which is the best reason for why the boiling temperature of HF is much higher than that of HCl? (1) A the instantaneous dipole-induced dipole (London) forces are stronger in HF B HF molecules have a smaller mass C there are intermolecular hydrogen bonds in HF D HF molecules have fewer electrons

Question

Physics

Edexcel2023

ΔE = mcΔθ ΔE = LΔm Gravitational fields Molecular kinetic theory Gravitational force

Question

Physics

CAIE2023

(a) The defining equation of simple harmonic motion is a = -ω2x. (i) State the relation between ω and the frequency f. (ii) State the significance of the negative (-) sign in the equation. [2] (b) A frictionless trolley of mass m is held on a horizontal surface by means of two similar springs, each of spring constant k. The springs are attached to fixed points as illustrated in Fig. 2.1. spring trolley fixed point Fig. 2.1 When the trolley is in equilibrium, the extension of each spring is e. The trolley is then displaced a small distance x to the right along the axis of the springs. Both springs remain extended. (i) Show that the magnitude F of the restoring force acting on the trolley is given by F = 2kx. [2] (ii) The trolley is then released. Show that the acceleration a of the trolley is given by −2kx a = m [2] © UCLES 2005 9702/04/SPECIMEN PAPER PPPMMMTTT

Question

Mathematics

Edexcel2023

*P71912A0428* PMT

Question

Physics

CAIE2023

00 day (8.64 × 104s). Calculate, to three significant figures, (i) the gravitational force F of attraction between the mass and the Earth, G F = N G (ii) the centripetal force F on the 1.00kg mass, C F = N C (iii) the difference in magnitude of the forces. difference = N [6] (c) By reference to your answers in (b), suggest, with a reason, a value for the acceleration of free fall at the Equator. [2] © UCLES 2005 9702/04/SPECIMEN PAPER [Turn over PPPMMMTTT For

Question

Mathematics

Edexcel2023

Chemists often use the term ‘orbital’ when considering atomic structure. (a) State what is meant by the term orbital. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) Draw diagrams to show the shape of an s and a p orbital. (2) s orbital p orbital (c) What is the electronic configuration of a copper atom? (1) A [Ar]4s13d10 B [Ar]4s23d9 C [Ar]4s24p13d8 D [Ar]4s24p23d7 (Total for Question 2 = 5 marks) 

Question

Physics

Edexcel2023

A car is fitted with an airbag which will inflate if the car stops very suddenly. (Source: © KAIROS, LATIN STOCK/SCIENCE PHOTO LIBRARY) Which of the following is increased if the airbag inflates because the car suddenly stops? A change in momentum of the driver B change in velocity of the driver C force on the driver D time that the driver takes to stop (Total for Question 7 = 1 mark)

Question

Mathematics

Edexcel2023

6 When molten, it is suggested that it breaks down as shown. I Cl  ICl+ + ICl–

Question

Mathematics

Edexcel2023

(1) A octahedral B square planar C tetrahedral D trigonal bipyramidal (iii) The equilibrium position for the dissociation of molten I Cl lies to the left.

Question

Mathematics

Edexcel2023

5 6 5 2 2 (i) Which of these could be used to show the end‑point of a titration of benzoic acid with sodium hydroxide solution? (1) A bromothymol blue B litmus C methyl orange D phenolphthalein (ii) Another weak acid found in cranberries is quinic acid, C H (OH) COOH.

Question

Mathematics

Edexcel2023

*P71912A0228* PMT Answer ALL questions. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross .

Question

Mathematics

Edexcel2023

4 3 complex ion [Cr(H O) ]3+(aq).

Question