Energy Equations Flashcards
(6 cards)
1
Q
What is the equation for efficiency?
A
Efficiency(%)=(useful energy out/total energy in) x 100
2
Q
What is the equation for gravitational potential energy?
A
GPE= m x g x h
GPE=mass x gravity x height
3
Q
What is the equation for kinetic energy?
A
KE=1/2 x m x v2
Kinetic energy=0.5 x mass x velocity2
4
Q
What are the equations for work done?
A
W=Fd Work done=force x distance Or W=E Work done=Energy transferred
5
Q
What is the equation for power?
A
P=E/t
Power=energy/time
6
Q
What is the equation that relates energy, specific heat capacity, change in temperature and mass?
A
E=cmØ
Energy=specific heat capacity x mass x change in temperature
