Mechanical Properties of Solids — Physics STD 11 Science — Question

Explain why :
The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat.

At which point (beats or antinode) sound will loud?

A steel plate of face area 4cm² and thickness 0.5cm is fixed rigidly at the lower surface. A tangential force of 10N is applied on the upper surface. Find the lateral displacement of the upper surface with respect to the lower surface. Rigidity modulus of steel = 8.4 × 10¹⁰N/m².

What is the principle of homogeneity of dimensions?

How will a mercury barometer's height change, if we introduce some water vapour into it.

Doubling the pressure at constant temperature for a gas but the molecular weight, what will be the effect on velocity?

The maximum horizontal range of a projected object is R. What is maximum height it reaches?

The glass and copper pieces are heated to the same temperature. Why does a piece of copper feel hotter when touched?

Frictional force between solids operates even when they do not move with respect to each other. Do we have viscous force acting between two layers even if there is no relative motion?

When we place a gas cylinder on a van and the van moves, does the kinetic energy of the molecules increase? Does the temperature increase?