Energy Flashcards
1
Q
Frequency =
A
Number of waves divide time
2
Q
Housing insulators used:
A
Cavity wall insulation
Loft insulation
3
Q
Efficiency equation?
A
(Useful energy out divide total energy in) X 100
4
Q
Gravitational potential energy equation
A
GPE = M X G X H
5
Q
Describe how light bulb transfers energy
A
The light bulb starts off with electrical energy. The light energy is useful energy. On the other hand heat energy and sound energy is wasted / dissipated into its surroundings
6
Q
Ripple tank required practical: what do you do to find out number of waves ?
A
Count number of waves passing a point for 10 s then x it by 10
7
Q
Gravitational potential energy unit is …
A
Joules (J)
8
Q
Mass in GE equation is measured in …
A
KG (kilograms)
9
Q
Gravitational field strength (g) FROM GE equation is measured in
A
N/KG
