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Energy

1.7.1

What the syllabus asks of you

  • State that energy may be stored as kinetic, gravitational potential, chemical, elastic (strain), nuclear, electrostatic and internal (thermal)
  • Describe how energy is transferred between stores during events and processes, including examples of transfer by forces (mechanical work done), electrical currents (electrical work done), heating, and by electromagnetic, sound and other waves
  • Know the principle of the conservation of energy and apply this principle to the transfer of energy between stores during events and processes
  • Recall and use the equation for kinetic energy Ek = 1 / 2 mv2
  • Recall and use the equation for the change in gravitational potential energy ΔEp = mgΔh

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Chapter 1: Energy

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30 questions

1Oct / Nov 2025 · Paper 12 · Q15
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Achemical
Belectrostatic
Cnuclear
Dthermal

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2Oct / Nov 2025 · Paper 12 · Q16
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AIt doubles.
BIt halves.
CIt increases by a factor of four.
DIt stays the same.

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3May / June 2025 · Paper 12 · Q8
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A60 J
B120 J
C360 J
D720 J

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4Oct / Nov 2024 · Paper 11 · Q16
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A0.25 m / s
B0.5 m / s
C2.0 m / s
D4.0 m / s

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5Oct / Nov 2024 · Paper 11 · Q17
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Aelastic potential energy → kinetic energy
Bkinetic energy → thermal energy
Cchemical energy → elastic potential energy
Dkinetic energy → sound energy

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6Oct / Nov 2024 · Paper 12 · Q32
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Aby electrical work done to chemical energy
Bby electrical work done to thermal energy
Cby mechanical work done to chemical energy
Dby mechanical work done to thermal energy

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7May / June 2024 · Paper 11 · Q10
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A0.50 × 5.0 × 2.0
B5.0 × 9.8 × 3.0
C0.50 × 5.0 × 2.0²
D5.0 × 9.8 × 8.0

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8Oct / Nov 2023 · Paper 11 · Q8Also set in May / June 2019 Paper 11
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AA
BB
CC
DD

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9Oct / Nov 2023 · Paper 12 · Q12
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AA
BB
CC
DD

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10May / June 2023 · Paper 11 · Q12
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Achemical
Belastic
Celectrostatic
Dnuclear

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11May / June 2023 · Paper 12 · Q13
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Achemical
Belectrostatic
Cgravitational
Dkinetic

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12May / June 2022 · Paper 11 · Q8
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Athe change in kinetic energy
Bthe change in temperature of the stone
Cthe friction between the stone and the air
Dthe thermal energy produced

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13May / June 2021 · Paper 11 · Q33
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Achemical to electrical
Belectrical to heat
Celectrical to chemical
Dheat to electrical

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14May / June 2021 · Paper 12 · Q16
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A2.0 J
B5.0 J
C10 J
D20 J

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15Oct / Nov 2020 · Paper 11 · Q14
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Aelectrical → chemical
Belectrical → internal
Ckinetic → electrical
Dpotential → electrical

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16Oct / Nov 2020 · Paper 11 · Q17
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Aweight / N: 600, increase in gravitational potential energy / J: 1320
Bweight / N: 700, increase in gravitational potential energy / J: 1610
Cweight / N: 800, increase in gravitational potential energy / J: 1760
Dweight / N: 900, increase in gravitational potential energy / J: 1800

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17Oct / Nov 2020 · Paper 12 · Q13Also set in Oct / Nov 2020 Paper 11
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AIt is the same at all points.
BIt is greatest at point 1.
CIt is greatest at point 2.
DIt is greatest at point 3.

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18Oct / Nov 2020 · Paper 12 · Q29
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Acurrent, A
Bcurrent, A s
Cenergy, J
Denergy, J / s

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19Oct / Nov 2020 · Paper 12 · Q35
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Aa car battery
Ban electric fire
Can electric motor
Da wind turbine

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20May / June 2020 · Paper 12 · Q16Also set in May / June 2020 Paper 11
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AIt doubles.
BIt halves.
CIt increases by a factor of four.
DIt stays the same.

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21May / June 2020 · Paper 12 · Q17Also set in May / June 2020 Paper 11
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A5000 J
B200 000 J
C500 000 J
D2 000 000 J

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22May / June 2020 · Paper 12 · Q20
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Aa car battery turning the starter motor
Ba car moving along a horizontal road at constant speed
Ca solar panel warming water
Da spacecraft orbiting the earth at constant height

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23Oct / Nov 2019 · Paper 12 · Q14
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A1
B2
C4
D8

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24May / June 2019 · Paper 12 · Q16
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Amass multiplied by its velocity
Bmass multiplied by its acceleration
Cthe rate at which work is done
Dweight multiplied by the increase in height

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25Oct / Nov 2018 · Paper 12 · Q8
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Adecreases / decreases
Bdecreases / increases
Cincreases / decreases
Dincreases / increases

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26Oct / Nov 2017 · Paper 11 · Q9
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A0.46 m / s
B0.57 m / s
C0.64 m / s
D0.80 m / s

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27Oct / Nov 2017 · Paper 12 · Q8
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A\frac{1}{2} \times 0.056 \times (25)^2
B\frac{1}{2} \times 0.056 \times (1500)^2
C\frac{1}{2} \times 56 \times (25)^2
D\frac{1}{2} \times 56 \times (1500)^2

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28Oct / Nov 2016 · Paper 11 · Q10
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A25 kg
B250 kg
C450 kg
D810 kg

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29Oct / Nov 2016 · Paper 12 · Q11Also set in Oct / Nov 2016 Paper 11
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AP → Q → R
BP → R → Q
CR → P → Q
DR → Q → P

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30May / June 2016 · Paper 11 · Q11
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Achange in gravitational potential energy: 1750; final kinetic energy: 450
Bchange in gravitational potential energy: 1750; final kinetic energy: 1750
Cchange in gravitational potential energy: 17 500; final kinetic energy: 16 200
Dchange in gravitational potential energy: 17 500; final kinetic energy: 17 500

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