50 POINTS Two charged objects are positioned 5 cm away from each other. Describe the change in the force between these two objects when:

(a) the charge on one of the objects is increased

(b) the distance between the objects is increased to 10 cm

(c) the charge on both of the objects is decreased

Please answer all 3

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)