Water is being fired at 20 m/s from a hose of 80 mm diameter into the atmosphere. The water leaves the hose through a nozzle with a diameter of 25 mm at its exit.
Using the combination of continuity, momentum and Bernoulli's equations, find
the pressure just upstream of the nozzle and the force on the nozzle. [10 marks]
1
2
Data: 01 = unknown; d = 0.08m; U2 = 20 m/s; d2 = 0.025m.
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22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i. e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.