If a wire 30 cm long is extended to 30.5 cm by a force of 300 N. find the strain energy of wire

In a hydraulic press, the pump piston exerts a pressure of 100 pa on the liquid. what force is exerted in the second piston of cross sectional area 3 m2?

The accurate measurement of the relative density of a substance in its powdered form is done with a beam balance and?

A hydrometer is an instrument used in measuring?

One special advantage of alcohol over mercury as a thermometric liquid is its?