Systems of Particles and Rotational Motion — Physics STD 11 Science — Question

A small creature moves with constant speed in a vertical circle on a bright day. Does its shadow formed by the sun on a horizontal plane move in a simple harmonic motion?

Place a safety pin on a sheet of paper. Hold the sheet over a burning candle, until the paper becomes yellow and charr. On removing the pin, its white trace is observed on the paper. Why?

of the three Young's modulus of elasticity, Bulk modulus and shear modulus is possible in all the three states of matter (solid, liquid and gas)?

Two satellites of equal masses, which can be considered as particles, are orbiting the earth at different heights.
Will their moments of inertia be same or different?

When do real gases follow PV = RT more accurately?

When air is blown in between two balls suspended close to each other, they are attracted towards each other. Give reason.

How is shear modulus related to Young's modulus?

Usually a good conductor of heat is a good conductor of electricity also. Give reason.

The gravitational potential energy of a body at a distance r from the centre of earth is U. What is the weight of the body at that point?

Use the definition of linear pomentum from the previous question. Can we state the principle of conservation of linear pomentum for a single particle?