Oscillations — Physics STD 11 Science — Question

Which of the following examples represent periodic motion?

A hydrogen molecule rotating about its centre of mass.

A pendulum clock gives correct time at the equator. Will it gain time or loose time as it is taken to the poles?

What is the order of magnitude of 0.00006?

A hole is made in a container at a depth below the free surface of the liquid whose radius is r. Write the formula for the ejection velocity of the liquid jet coming out of this hole.

What is called coefficient of volume expansion?

Are all periodic motions oscillatory by nature?

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

What is the relation between the orbital and escape velocity?

Why strain has no units?

The calorie ia defined as 1cal = 4.186 joule. Why not as 1cal = 4J to make the conversions easy?