internal energy (topic 3) Flashcards
1
Q
(2)
A
- it is the cheapest
- has the shortest payback time
2
Q
(1)
A
the bigger the surface area, the faster the water cools down / temperature falls
3
Q
(2)
A
- have large surface / area
- radiate heat, loses heat
4
Q
A
radiation
conduction
5
Q
A
- black
- best absorber (of infrared)
6
Q
why does the cooking pot have a lid (1)
A
to reduce energy loss
7
Q
A
- mass (of block)
- starting temperature
- voltage / p.d.
- power (supplied to each block)
- thickness of insulation
8
Q
A
- (type of) material is categoric
- the data is categoric
9
Q
A
- concrete
- (heater on for) longest time
10
Q
A
20
(must use line of best fit which starts at 20)
