Oscillations — Physics STD 11 Science — Question

You are walking along a seashore and a mild wind is blowing. Is the motion of air a wave motion?

Can a body in linear motion be in equilibrium?

Arrange Cu, Al and Ag in the order of increasing thermal conductivity?

Does specific heat of water remain constant throughout?

The linear momentum of the body can change only in the direction of applied force. Comment.

Which of the following examples represent periodic motion?
An arrow released from a bow.

The sign of work done by a force on a body is important to understand. State carefully if the following quantities are positive or negative:
Work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket.

Why does light come before sound in the under storm?

If x = a + bt + ct² where x is in metre and t in second, then what is the unit of e?

Why the speed of a whirl wind in a tornado is alarmingly high?