A1.5 kg spherical ball is has a radius of 50 cm is rotating with angular velocity of 12 revolutions per minute. determine the rotational kinetic energy

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29×10 to the power of −11 m, the expected position of the electron in the atom.