A boy standing some distance from the foot of a tall cliff claps his hands and hears an echo 0.5s later. If the speed of sound is \(340\mathrm{ms}^{-1}\), h...

A given mass of gas has a pressure of \(80\ \mathrm{Nm}^{-2}\) at a temperature of \(47\ \mathrm{C}\). If the temperature is reduced to \(27\ \mathrm{C}\) wi...

Which of the units of the following physical quantities are derived? I. Area II. Thrust III. Pressure IV. Mass

The slope of the straight line displacement-time graph indicates?

0.5kg of water at 10ºC is completely converted to ice at 0ºC by extracting (88000) of heat from it. If the specific heat capacity of water is 4200jkg\(^{1}\)...

The motion of a body is simple harmonic if the?

Which of the following is not correct about the molecules of a substance in a gaseous state. They?

A man will exert the greatest pressure when he?

A ball of mass 0.5kg moving at \(10\text{ms}^{-1}\) collides with another ball of equal mass at rest. If the two balls move off together after the impact, ca...