Suppose you have two planes A and B both traveling at a constant velocity. Let's say A travels at a velocity of (-i+6j) m/s, and B at (3i+4j) m/s, and when t=0, plane A has a position vector of (2i-10j) m, and plane B has a position vector of (-26i+4j) m. a) At what time will these planes collide?
b) In what position will the planes collide?

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.