A68.2 kg base runner begins his slide into second base while moving at a speed of 4.33 m/s. he slides so that his speed is zero just as he reaches the base. the acceleration of gravity is 9.8 m/s 2 . what is the magnitude of the mechanical energy lost due to friction acting on the runner?

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly