The electric field everywhere on the surface of a thin, spherical shell of radius 0.750 m is of magnitude 890 n/c and points radially toward the center of the sphere. (a) what is the net charge in nano coulomb within the sphere’s surface? (b) what can you conclude about the nature and distribution of the charge inside the spherical shell?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)