Energy Flashcards
1
Q
What is energy?
A
Energy is the ability to work.
2
Q
When is energy transferred?
A
Energy is transferred when work is done.
3
Q
What is work?
A
Work is done when a force moves an object in the direction of the force.
4
Q
Work = ?
A
Work(joules) = Force(newtons) x Distance(meters)
5
Q
What does power measure?
A
Power measures the rate at which work is done.
6
Q
Power = ?
A
Power = Work/Time or Energy/time
7
Q
What is Ek (kinetic energy)?
A
Ek = 1/2 x m x v^2
8
Q
What is Ep (potential energy)?
A
Ep = m x g x h
9
Q
What is E (electrical energy)?
A
E = I x V x T
10
Q
What is E (elastic potential energy)?
A
E = 1/2 x k x (delta x)^2
11
Q
What is Q (thermal energy)?
A
Q = m x c x delta T
12
Q
What is P (electrical power)?
A
P = I x V
