Class 11th

In a transverse progressive wave of amplitude A, the maximum particle velocity is four times its wave velocity. The wavelength of the wave is:-

The kinetic energy of a body decreases by 36%. The decrease in linear momentum is

A particle of mass m is dropped from rest from a height h₀ on a horizontal floor. The coefficient of restitution between the floor and particle is e. Maximum height attained by the particle after second collision is

An automobile engine develops 105 W power when rotating at an angular speed of 900 rad/minute. The instantaneous torque delivered by the engine is

Gravitational force between two point masses is found to be F when both are in vacuum. If both the masses are immersed in water, new gravitational force will be:

A ball is projected from ground with initial momentum p at an angle q. What is the magnitude of net change in linear momentum when it reaches at maximum height of journey?

Equation of a standing wave is expressed as y = 2Asinωt coskx. In this equation, quantity w/k represents.

Mercury does not wet glass because

When an elevator is moving downward with a increasing speed, the apparent weight of a body inside elevator

What is an olefin in hydrocarbons?