Laws of Motion — Physics STD 11 Science — Question

Two identical solid balls, one of ivory and the other of wet-clay, are dropped from the same height on the floor. Which will rise to a greater height after striking the floor and why?

Why use the water bottle for fermentation?

Find the area of the circle of radius 3.458cm upto correct significant figures.

Can the mass of body be taken to be concentrated at its centre of mass for the purpose of calculating its rotational inertia?

Galileo was punished by the Church for teaching that the sun is stationary and the earth moves around it. His opponents held the view that the earth is stationary and the sun moves around it. If the absolute motion has no meaning, are the two, viewpoints not equally correct or equally wrong?

What are the two conditions when a real gas follow the ideal gas equation PV = nRT?

If the speed of a rod moving at a relativistic speed parallel to its length is doubled,

1. The length will become half of the original value.
2. Mass will become double of the original value.
3. The length will decrease.
4. The mass will increase.

Between the first and fifth nodes is 40 cm then find wavelength of wave?

A ballet dancer stretches her hand out for slowing down. Name the conservation obeyed.