What is the unit of co-efficient of linear expansion.

What is the unit of power?

What is the coefficient of x in the expansion of (1+x)^n?

A brass wire 1.8 m long at 27^@C is held taut with little tension between two rigid supports. If the wire is cooled to a temperature of 39 ^@C , what is the tension developed in the wire, if its. diameter is 2.0 mm? Co-efficient of linear expansion of brass = 2.0 XX 10^-5 K^-1 Young’s modulus of brass = 0.91xx10^11 P

What is the SI unit of current?

What is the S.I. unit of force?

What is the unit of acceleration-