An aeroplane is to fly 200 km to the east in 1 hour. There is a wind blowingat 50km/hr from the south. With the aid of a diagram, calculate the direction and speed the aeroplane has to fly to reach its destination on time.

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.