PART - 1 CH - 2 Motion in a Straight Line — Physics STD 11 Science — Question

If all the particle of a system lie in a cube, is it neccesary that the centre of mass be in the cube?

What is the unit for spring or force constant?

A wave pulse passing on a string with a speed of 40cm/s in the negative x-direction has its maximum at x = 0 at t = 0. Where will this maximum be located at t = 5s?

Is it possible to have interference between the waves produced by two violins? Why?

What is the weight felt by a person in a lift when it has free fall?

In the above given problem if the lower thread is pulled with a jerk, what happens?

Sudden motion on a blanket removes dust. How?

Give a method for the determination of the mass of the moon.

We often say, "A current is going through the wire." What goes through the wire, the charge or the current?