Four point charges of equal magnitude but different signs are arranged on the corners of a square as shown above. Which of the vectors shown represents the direction of the net force acting on the charge in the upper left-hand corner of the square, due to the other charges?

Calculate the kinetic energy of earth due to its spinning about its axis. krot = j compare your answer with the kinetic energy of the orbital motion of earth's center of mass about the sun. assume earth to be a homogeneous sphere of mass 6.00 1024 kg and radius 6.40 106 m. the radius of earth's orbit is 1.50 1011 m.

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?