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A jet of water leaves the nozzle at the end of a hose. The area and absolute pressure inside the hose are A1 and p1 and the area and absolute pressure of the jet leaving the nozzle are A2 and p2. The absolute air pressure is atmospheric pressure. A control volume for the nozzle is shown with dotted lines. What is the correct statement for the net forces exerted by the pressure on the control volume?
A plane can fly 305 mph in still air. If it can fly 185 miles downwind in the same amount of time it can fly 120 miles upwind, find the velocity of the wind.
the block is subjected to a compressive force of 2kn. determine the average normal and average shear stress developed
air is constantly being recirculated throughout the me building. in the summer that air is also cooled using chilled
a wind tunnel has a 1-m2 6-m-long test section in which air at standard sea-level conditions moves at 70 ms. it is
what is the specific heat of air in US customary units given that its value in SI units is approximately 1 kN.m/kg.K?
for a spinning solid circular disk of radius a and constant thickness the maximum stresses occur at thenbspcenter of
lead experiences corrosion in an acid solution according to the following reaction pb 2h rightarrow pb2 h2 the rates
a special high pressure u-tube manometer is constructed to measure pressure differential in air at 13.8mpa and 20 c
a fruit juice containing 30 solids of molecular weight 100 g was placed in a tray length 100 cm height 90 cm width 8
a heat engine working on carnot cycle converts 25% of heat into work when the temperature of the sink is reduced by 353 k the efficiency gets doubled .find the temperature of source and sink.
the pressure drop between the entrance and exit of a 150 mm diameter 90deg elbow through which ethyl alcohol at 20degc
a 30-ton engine exerts a constant horizontal force of 40103-lb on a train having three cars that have a total weight of
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