Physics Past Questions and Answers

A sealed flask contains 600cm³ of air at 27°C and is heated to 35°C at constant pressure. The new volume is?

A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is?

If the partial pressure of water vapour at 27°C is 18 mm Hg and the saturated vapour pressure of the atmosphere at the same temperature is 24 mm Hg, the relative humidity at this temperature is?

In a good thermos flask, the main cause of heat loss is?

Given the progressive wave equation y = 5 sin (2000 πt - 0.4x), calculate wave length