Physics Flashcards
1
Q
Equation for work done:
A
work done=force x distance
2
Q
Equation for kinetic energy:
A
Ek=1/2mv(2)
3
Q
equation for electrical energy:
A
electrical energy=power rating x time
4
Q
equation for efficiency:
A
efficency= useful energy output divided by total energy imput times 100.
5
Q
equation for electrical potential energy:
A
Ee=1/2 x k x e(2)
6
Q
equation for cost effectiveness.
A
cost effectivness= saving each year divided by cost to instal.
7
Q
what is the unit for force?
A
Newtons (N)
