25fanng1, I need your help in 2.05 in science. Physical Models.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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)