Mechanical Properties of Fluids — Physics STD 11 Science — Question

One flask contains glycerine and the other flask contains water. Both are spun rapidly and placed on the table. The liquid in which flask will come to rest first and why?

Write copper, steel, glass and rubber in the order of increasing coefficient of elasticity.

What is the reason that generated sound in air can't be heared or less heares in water to the observer?

Name the quantity that remains conserved in rocket propulsion.

What is the time period of oscillation of a pendulum in a satellite?

What is moment of inertia of a solid sphere about its diameter?

Snow is a better insulator than ice. Why?

If earth be at one half its present distance from the sun, then how many days will there be in a year?

Calculate the power of an electric engine which can lift 20 tonne of coal per hour from a mine 180m deep.