(i) On Fig. 9.1, sketch the variation of p with .
λ
p
Question
Physics
Edexcel2024
P74468A
*P69442A02832*
PMT
Further mechanics Energy stored in a capacitor
Question
Physics
Edexcel2024
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
(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:3)(cid:2)(cid:44)
(d) The electrons are now accelerated through different values of V, resulting in pairs of
corresponding values for p and the de Broglie wavelength λ.
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
Physics
Edexcel2023
*P71915A02528*
Turn over
DO
NOT
WRITE
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THIS
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DO
NOT
WRITE
IN
THIS
AREA
DO
NOT
WRITE
IN
THIS
AREA
AERA
SIHT
NI
ETIRW
TON
OD
AERA
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NI
ETIRW
TON
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AERA
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NI
ETIRW
TON
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PMT
Further mechanics Energy stored in a capacitor
Question
Physics
Edexcel2022
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
Edexcel2022
*P69306A02628*
PMT
Further mechanics Energy stored in a capacitor
Question
Physics
Edexcel2021
*P67096A03032*
PMT
Further mechanics Energy stored in a capacitor
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
*P61864RA02728*
Turn over
PMT
Further mechanics Energy stored in a capacitor
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
Question
Physics
Edexcel2020
*P61864RA01828*
PMT
(b) Just as the spider starts the jump, it fixes a silk thread to the platform. It is thought
that the thread acts as a safety line in case the spider falls.
silk thread
platform
A student makes the comment:
ʻIf the silk thread can withstand a tension equal to the weight of the spider then this
safety system should work.ʼ
Deduce whether this statement is correct.
(2)
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(Total for Question 16 = 14 marks)