Why is it cooler at the top of mountains?

Why is meta centre?

From a point on the ground,the angles of elevation of the bottom and the top of a transmission tower fixed at the top of a 20m hihg building are 45^@ and 60^@ respectively.Find the height of the tower.

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g= 10 m s^-1 and speed of sound = 340 m s^-1 .

Why do we feel cooler under the fan?

A stone allowed to fall from the top of a well hit the water surface after 1 second. find out: the distance between the top of the well and the water surface.

Why is bakelite a thermosetting plastics?

Why is it difficult to walk on ice ?

Why is coal called fossil fuel ?

Explain why a piece of iron appears to be cooler than a piece of wood in winter.

Water is falling from the top of a high water fall. On falling :