Equations

Question 1

Kinetic energy equation

Answer 1

Kinetic energy = 0.5 x mass x speed squared

Question 2

Gravitational potential energy equation

Answer 2

Gravitational potential = mass x gravitational field strength x height

Question 3

Power equation 1

Answer 3

Energy transfered/ time

Question 4

Power equation 2

Answer 4

Work done/time

Question 5

Efficiency equation

Answer 5

Useful output energy transfer/total input energy transfer

Question 6

Efficiency equation 2

Answer 6

Useful power output/total power input

Question 7

Charge flow equation

Answer 7

Charge flow = current x time

Question 8

Potential difference equation

Answer 8

Potential difference = current x resistance

Question 9

Power equation

Answer 9

Power = current squared x resistance

Question 10

Energy transferred equation

Answer 10

Energy transferred = power x time

Question 11

Energy transferred equation 2

Answer 11

Energy transferred = charged flow x potential difference

Question 12

Density equation

Answer 12

Density = mass/volume

Question 13

Power 1 equation

Answer 13

Power = potential difference x current