A man standing 510m away from a wall sounds a whistle. The echo from the wall reaches him 3s later. Calculate the velocity of sound in air.

Similar Questions

Which of the following statements about the pressure in a liquid is NOT correct? It ...

Which gas produces a red coloured light in a discharge tube? ...

The direction of the path taken by light is called ...

An object is placed 10cm from a converging lens of foal length 15cm. Calculate the magnification of ...

A metal of mass 200g at a temperature of 100oC is placed in 100g of water at 25oC in a container of ...

When a certain a.c supply is connected to a lamp, it lights with the same brightness as it does with...

A fixed mass of gas of volume 600cm3 at a temperature of 27oC is cooled at constant pressure to a te...

Two forces 6N and 8N, act eastwards and northwards respectively on a body. Calculate the magnitude o...

The distance between a node and an anti-node for a transverse wave is equal to ...

Railway tracks are banked on curves ...