A heat engine is modified so that less of the heat it absorbs from the warmer reservoir is converted to work. Assuming that the amount of heat absorbed
remains the same, how do the efficiency and amount of heat released
change?

Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)

Which bonds are found inside a water molecule