Leaning against a smooth wall is a uniform board of length L as indicated in the sketch. The board has a mass of 10 kg. Calculate the forces exerted on the board by the floor and the wall​

The necleus of an atom is made up of what subatomic particles?

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.)

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig