physics

Question 1

State the law of conservation of energy

Answer 1

The total energy is the same at all times

Question 2

State 8 energy stores

Answer 2

Chemical, magnetic ,thermal, kinetic, nuclear, elastic potential, gravitational

Question 3

State 5 energy transfers

Answer 3

electric current, light, force, heat and sound

Question 4

State the equation for gravitational potential energy and say what each of the parts mean

Answer 4

m x g x h=Eg
M=mass
g=gravity
h=height

Question 5

State the equation for kinetic energy and state what each of the parts mean

Answer 5

Ek=1/2(0.5)x m x v2
m=mass
v=speed

Question 6

What do each of the elastic potential energy equation mean

Answer 6

K=spring constant
E=extension (m)
Ee=elastic potential energy

Question 7

What is specific heat capacity

Answer 7

Specific heat capacity tells you how much energy a material can hold for each degree of temperature rise

Question 8

describe what each of the parts of this equation mean

SHC equation

Answer 8

Change of energy=m x cx change of temp
m=mass
c=heat capacity