PHYS 2053 Final: PHYS 2053 Final Exam 2007
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Time 9:00-11:00 am (i) short questions [20 points] Answer the following questions in the box provided. Reason: (3) select t-true, f-false. (if the first is f the second t and the rest f, write ftff). Name: (4) if an airstream from a hair dryer is directed over a ping-pong ball, the ball can be levitated. Reason: (ii) [20 points]fluids (1) (5 points) a very powerful vacuum cleaner has a hose 2cm in diameter. Name: (2) (5 points) water flows through a fire hose of inner diameter 6 cm at a rate of 0. 012 m3/s. The fire hose ends in a nozzle of inner diameter 2 cm. What is the speed with which the water exits the nozzle? (3) (5 points) assume your eardrum has a diameter of 0. 5 cm. Calculate the force that sea water exerts on your eardrum at a depth (below sea level) of 100 m.
