Planck constant h = 6.63 × 10−34 J s
Proton mass m = 1.67 × 10−27 kg
p
Speed of light in a vacuum c = 3.00 × 108 m s−1
Stefan-Boltzmann constant σ = 5.67 × 10−8 W m−2 K−4
Unified atomic mass unit u = 1.66 × 10−27 kg
Mechanics Work, energy and power
Kinematic equations of motion ΔW = FΔs
(u + v)t
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:3)(cid:44)
Data
acceleration of free fall g = 9.81 m s–2
speed of light in free space c = 3.00 × 108 m s–1
elementary charge e = 1.60 × 10–19 C
unified atomic mass unit 1 u = 1.66 × 10–27 kg
rest mass of proton m = 1.67 × 10–27 kg
p
rest mass of electron m = 9.11 × 10–31 kg
e
Avogadro constant N = 6.02 × 1023 mol–1
A
molar gas constant R = 8.31 J K–1 mol–1
Boltzmann constant k = 1.38 × 10–23 J K–1
gravitational constant G = 6.67 × 10–11 N m2 kg–2
permittivity of free space ε = 8.85 × 10–12 F m–1
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:3)(cid:44)
Data
acceleration of free fall g = 9.81 m s–2
speed of light in free space c = 3.00 × 108 m s–1
elementary charge e = 1.60 × 10–19 C
unified atomic mass unit 1 u = 1.66 × 10–27 kg
rest mass of proton m = 1.67 × 10–27 kg
p
rest mass of electron m = 9.11 × 10–31 kg
e
Avogadro constant N = 6.02 × 1023 mol–1
A
molar gas constant R = 8.31 J K–1 mol–1
Boltzmann constant k = 1.38 × 10–23 J K–1
gravitational constant G = 6.67 × 10–11 N m2 kg–2
permittivity of free space ε = 8.85 × 10–12 F m–1
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:3)(cid:44)
Data
acceleration of free fall g = 9.81 m s–2
speed of light in free space c = 3.00 × 108 m s–1
elementary charge e = 1.60 × 10–19 C
unified atomic mass unit 1 u = 1.66 × 10–27 kg
rest mass of proton m = 1.67 × 10–27 kg
p
rest mass of electron m = 9.11 × 10–31 kg
e
Avogadro constant N = 6.02 × 1023 mol–1
A
molar gas constant R = 8.31 J K–1 mol–1
Boltzmann constant k = 1.38 × 10–23 J K–1
gravitational constant G = 6.67 × 10–11 N m2 kg–2
permittivity of free space ε = 8.85 × 10–12 F m–1
Question
Mathematics
Edexcel2024
02 0.75 0.02
abundance
(ii) Calculate the relative atomic mass (A ) of the sulfur in this sample using the
r
data in the table. Give your answer to two decimal places.
(2)
(Total for Question 1 = 6 marks)
Question
Physics
Edexcel2023
Planck constant h = 6.63 × 10−34 J s
Proton mass m = 1.67 × 10−27 kg
p
Speed of light in a vacuum c = 3.00 × 108 m s−1
Stefan‑Boltzmann constant σ = 5.67 × 10−8 W m−2 K−4
Unified atomic mass unit u = 1.66 × 10−27 kg
Mechanics Work, energy and power
Kinematic equations of motion ΔW = FΔs
(u + v)t
Question
Chemistry
Edexcel2023
Magnesium has three naturally occurring isotopes: ²⁴Mg, ²⁵Mg and ²⁶Mg.
(a) Explain what is meant by the term isotopes.
(b) The percentage abundances of ²⁴Mg and ²⁵Mg are 79.0% and 10.0% respectively. Calculate the relative atomic mass of magnesium, giving your answer to 3 significant figures.
Planck constant h = 6.63 × 10−34 J s
Proton mass m = 1.67 × 10−27 kg
p
Speed of light in a vacuum c = 3.00 × 108 m s−1
Stefan‑Boltzmann constant σ = 5.67 × 10−8 W m−2 K−4
Unified atomic mass unit u = 1.66 × 10−27 kg
Mechanics Work, energy and power
Kinematic equations of motion ΔW = FΔs
(u + v)t
Question
Mathematics
Edexcel2021
*P65463A0328*
Turn over
PPMMTT
(c) The percentage composition of the two bromine isotopes in a sample is given in
the table.
Isotope Relative isotopic mass Percentage abundance
bromine-79 78.918 50.52
bromine-81 80.916 49.48
Calculate the relative atomic mass of bromine in this sample.
Give your answer to two decimal places.
(2)
(Total for Question 1 = 4 marks)
Question
Physics
Edexcel2021
Planck constant h = 6.63 × 10−34 J s
Proton mass m = 1.67 × 10−27 kg
p
Speed of light in a vacuum c = 3.00 × 108 m s−1
Stefan-Boltzmann constant σ = 5.67 × 10−8 W m−2 K−4
Unified atomic mass unit u = 1.66 × 10−27 kg
Mechanics Work, energy and power
Kinematic equations of motion ΔW = FΔs
(u + v)t
Question
Physics
Edexcel2020
Planck constant h = 6.63 × 10−34 J s
Proton mass m = 1.67 × 10−27 kg
p
Speed of light in a vacuum c = 3.00 × 108 m s−1
Stefan-Boltzmann constant σ = 5.67 × 10−8 W m−2 K−4
Unified atomic mass unit u = 1.66 × 10−27 kg
Mechanics Work, energy and power
Kinematic equations of motion ΔW = FΔs
(u + v)t