A round with a mass of m = 15.5 g is fired out of a rifle that has length L = 0.84 m. The round spends t = 014 s in the barrel Δ 50%. A) Calculate the magnitude of the round's acceleration, in meters per second squared, as it travels through the rifle's barrel.
B) What is the numerical value of the net force FNET in newtons acting on the round?

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 = 2.6 m below the tank bottom which is a = 6.7 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). report your answer in meters to two decimal places.