Waves — Physics STD 11 — Question

For elastic collision, coefficient of restitution is

A free falling body breaks into three parts of unequal masses. The center of mass of the three parts taken together shifts horizontally towards –

Due to the action of internal forces of the system, the total linear momentum of the system is –

A gale blows over a house. The force due to the gale on the roof is ………

The apparent wavelength of the light from a star, moving away from the earth, is 0.01% more than its real wave length. The speed of the star with respect to the earth is ……

Two vibrating tuning forks produce progressive waves given be y1 =4 sin 500 πt and y2 = 2 sin 506 πt where t is in seconds number of beats produced per minute is ……..

If the angle between force and displacement is acute then the work done is

Which of the following cannot be a resultant of two vectors of magnitude 3 and 6?

Sliding of the object occurs while –