How much wind speed from your mouth does it take to inflate a balloon (consider how it is hard at first to inflate the balloon but as the balloon inflates, it gets easier)?
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How much wind speed from your mouth does it take to inflate a balloon (consider how it is hard at first to inflate the balloon but as the balloon inflates, it gets easier)?
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- Water enters a typical garden hose of diameter 1.6 cm with a velocity of 3 m/s. Calculate the exit velocity of water from the garden hose when a nozzle of diameter 0.5 cm is attached to the end of the hose.Compare the pressure exerted by the tires of your car on the road with the air pressure in the tires. For this project, you need to know the weight of your car, which you can get from a manual or a dealer. You divide the weight by 4 to get the approximate weight held up by one tire. You can closely approximate the area of contact of a tire with the road by tracing the edges of the tire contact on a sheet of paper marked with 1-inch squares beneath the tire. After you calculate the pressure of the tire against the road, compare it with the air pressure in the tire. Are they nearly equal? If not, which is greater?hangine nd? QUESTION # 4 (CLO 2) (a) A house is to be designed to withstand hurricane-force winds. The maximum wind velocity is v=(any value greater than 10 and less than 100 in m/s). The surface area of the roof is A-450m. If the density of air is p-1.029kgm', calculate the force that the roof can withstand casily?
- A dam holds back the water in a lake. If the dam has a small hole 2.4 meters below the surface of the lake, at what speed does water exit the hole?Would the mass of air in the room be lower or higher if the tables, equipment etc. in the room were considered? Explain your reasoning.Windmills slow the air and cause it to fill a larger channel as it passes through the blades. Consider a circular windmill with a 7-m-diameter rotor in a 10 m/s wind on a day when the atmospheric pressure is 100 kPa and the temperature is 20°C. The wind speed behind the windmill is measured at 7.5 m/s. a) Determine the diameter of the wind channel downstream from the rotor. b) Determine the mass flow rate through the wind mill. c) Determine the power produced by this windmill, presuming that the air is incompressible. Flow channel