Power Flashcards
1
Q
Definition of work (done)
A
The product of force (N) and displacement
2
Q
Explanation of work
A
Done when an applied force displaces an object though displacement
3
Q
Unit for work
A
Joules (J) or Nm
4
Q
Unit of power
A
J/s or Watt (w)
5
Q
Power equation
A
P = W (work done)/time period
Or
P = E (energy transferred)/time period
6
Q
Energy stores
A
Kinetic, gravitational, elastic, magnetic, electrostatic, chemical, nuclear, thermal
7
Q
Energy transfers
A
Mechanical, electrical, heating, radiation
8
Q
Definition of power
A
The rate of doing work
9
Q
Explanation of power
A
The work done (w) divided by the time is took (t)
