Springs are generally made of steel but not of copper and alluminium - explain the reason .

Why are springs made of steel and not of copper?

Water flows faster than honey-- explain the reason?

During adiabatic expansion a gas cools - explain the reason .

A ball-bearing falling in a tall jar of motor oil attains a constant velocity. Explain the reason.

Bubbles of air coming out through water in glass vessel appears silvery to an observer standing by the sides Explain the reason.

Two wire having same length and same radius and given same load. One made of steel and other copper. If Young's modules of elasticity is twice that of other then calculate the potential energy stored in copper and steel.

Two wires of same radius and legth are subjected to the same load . One wire is of steel an the other is of copper . If the young modulus of steel is twice that of copper find the ratio of elastic energy stored per unit volume in steel to that of copper .

'steel is more elastic than rubber'' - explain .

Transverse wave of the same frequency are generated in two steel wires A and B.Diameter of A is twice that of B and tension is A is half that of B.The ratio of velocities of waves in A and B is

If a bimetallic strip made of iron and copper is heated ,then