Physics

1The lower fixed point on the Celsius scale is the

2A bimetallic strip bends on heating because the metals have different

3A 2 kW kettle heats 1 kg of water from 20 °C to 100 °C. Ignoring losses, the time taken is (c = 4,200 J/kg K)

4A gas at 2 atm occupies 3 litres. At constant temperature, at 6 atm it occupies

5The specific latent heat of vaporisation of water is the heat needed to

6The transfer of heat in liquids and gases by the movement of the fluid is

7A vacuum flask reduces heat loss by conduction and convection mainly through its

8The heat needed to raise 2 kg of water by 10 °C (c = 4200 J/kg K) is

9A gas at 2 atm and 300 K is compressed to half its volume while its temperature rises to 450 K. Its new pressure is

10The heat needed to melt 0.5 kg of ice at 0 °C (L = 336,000 J/kg) is