P1 Flashcards
1
Q
Work done (not)
A
W=Fs
W=work done
F=force
s=distance
2
Q
Kinetic energy
A
Ek=1/2mv*2
3
Q
Gravitational potential energy
A
Ep=mgh
4
Q
Elastic
A
Ee=1/2ke*2
K=spring constant
e=extension
5
Q
Thermal
A
(triangle)E=mc0
Triangle=Change in thermal energy
m=mass
c=specific heat capacity
0=temperature change
6
Q
Specific heat capacity meaning
A
The amount of energy needed to raise the temperature of 1 kg of a substance by 1°C
7
Q
Force (elastic)
A
F=ke
F=force(N)
k=spring constant(N/m)
e=extension(m)
8
Q
Efficiency
A
Efficiency=useful output/total input
9
Q
Efficiency with power
A
Efficiency=useful power output/total power input
10
Q
Power
A
P=E/t or P=W/t
P=power
E=energy transferred
t=time
W=work done
