Calculate the work (in joules) required to pump all of the water out of a full tank. Assume a = 16 m, b = 8 m, water exits through the spout c = 3 m, and the density of water is 1,000 kg/m3 . (Assume that acceleration due to gravity is g = 9.8 m/s2.)

Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. the electric field at a point p, which is 0.50 m from the center of the sphere, is 15,000 n/c and is directed radially outward. what is the maximum magnitude of the electric field due to this sphere

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Explain why electric current cannot exist if a current doesn't have a voltage source.