Acrystal is irradiated with x-rays with a wavelength of 0.120 nm. the atomic planes in the crystal are separated by 0.21 nm. at what angles of incidence with respect to the normal will the x-rays reflect from the crystal?

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

A( developed during the process of technology design

Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?