1
Q
what is power?
A
the amount of energy transferred per unit time or the amount of work done per unit time
2
Q
what is the unit for power?
A
Watt (w) or one Joule per second or one Nm
3
Q
what is the formula for power?
A
work done/ time = FD/t = WD/t = mgd/t
physics
flashcards
Decks in class (47)
# Cards
-
sound waves20
-
longitudinal and transverse waves10
-
wave properties14
-
EM spectrum23
-
distance and velocity time graphs10
-
forces9
-
skydiver in free fall5
-
hookes law9
-
momentum27
-
reflection and refraction28
-
snells law24
-
total internal reflection6
-
current5
-
voltage7
-
resistance9
-
current in series and parallel6
-
voltage in series and parallel4
-
combined resistance2
-
IR graphs4
-
electrical components11
-
electrical power and fuses10
-
electrical safety13
-
AC and DC7
-
conductors1
-
how insulating materials can be charged by friction0
-
ideal gases32
-
radioactivity97
-
energy transfers and stores20
-
conservation of energy6
-
thermal conduction11
-
convection4
-
thermal radiation5
-
reducing energy loss14
-
work done8
-
gravitational potential energy8
-
kinetic energy5
-
power3
-
energy resources10
-
comparing different energy sources16
-
density7
-
density practicals2
-
pressure between solids5
-
pressure in liquids7
-
solids liquids and gases10
-
changes of state2
-
practical-changes of state10
-
specific heat capacity6
