Energy Formulas

Question 1

Gravitational Potential Energy can be Calculated by??

Answer 1

Gravitational Potential Energy = mass * gravitational strength * height

E = m * g * h

Question 2

What is the Equation which links Power, time and energy/work done??

Answer 2

Power = Energy / Time
Power = Work Done / Time

P = E/t or P = W/t

Question 3

How to Calculate Efficiency using Power

Answer 3

Efficiency = Useful Power Output / Total Power Input

Efficiency = Useful / Total

Question 4

Kinetic Energy can be calculated by??

Answer 4

Kinetic Energy = 1/2 * mass * velocity^2

E = 1/2 * m * v

Question 5

How to Calculate Efficiency of Energy Transfer??

Answer 5

Efficiency = Useful Output Energy Transfer/ Total Input Energy Transfer

Efficincy = Useful / Total

Question 6

Energy Lost from G.P.E store can be Calculated by??

Answer 6

Energy Gain in Kinetic Energy Store

Question 7

Change in thermal Energy can be calculated by???

Answer 7

Change in Thermal Energy = Mass * Specific Heat Capacity * Temperature change

ΔE = m * c * Δθ

Question 8

Elastic Potential Energy can be calculated by??

Answer 8

Elastic Potential Energy = 1/2 * spring constant * extension^2

E = 1/2 * k * e^2