A rock of mass 45.0 kg is lifted by a crane. Suppose that the crane accidentally drops the rock from a height of 32.0 m. How much work does gravity do on the rock? What is the rock's Kinetic Energy and final velocity just before it hits the ground?

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90