Objects 1 and 2 attract each other with a gravitational force of 36.0 units. If the distance separating Objects 1 and 2 is
changed to one-third the original value, then the new
gravitational force will be _ units.

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)