State the basic assumptions of the kinetic theory. a- All matter is composed of small particles;

b- The particles are in constant motion;

c- Molecules are smaller than atoms.

d- The energy lost in the collisions is negligible.

e- These particles are constantly colliding;
i need help so fast pls im in a exam !!!

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87