Workdone on an object to bring it to a certain point in space is called
A copper rod, 5m long, when heated through 10ºC, expands by 1mm. If a second copper rod, 2.5m long, is heated through 5ºC, by how much will it expand?
A safety precaution designed to prolong the life of a lead acid accumulator is
The mass of water vapour in a given volume of air is 0.05g at 20°C, while the mass of water vapour required to saturate it at the same temperature is 0.15g. Calculate the relative humidity of the air.
The angular dispersion of a prism depends on
