Energy Flashcards
1
Q
Kinetic energy equation
A
Ek=1/2xmassxvelocity2
2
Q
GPE equation
A
GPE=massxgravitational field strengthxheight
3
Q
2 answers
Power equation
A
P=Work done/time taken or
energy transferred/time taken
4
Q
2 answers
Effiency equation
A
Useful energy output/total energy input or
useful power output/total power input
5
Q
Equation is given in exam
Elastic potential energy equation
A
Ee=1/2xspring constantxexstension2
6
Q
Equation is given in exam
Change in thermal energy equation
A
=massxspecific heat capacityxtemperature change
7
Q
Units for m,v2,GFS,height
A
m kg
v2 m,s or m,s2
GFS N/Kg
height metres
8
Q
What is all energy measured in
A
Joules
9
Q
Units for power temp specific heat spring constant exstension
A
P watts
Temp dot C
Specific heat J/Kg/dot C
Spring constant N/m
e metres
