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A heavy ball with a weight of 130 N is hung from the ceiling of a lecture hall on a 4.0-{\rm m}-long rope. The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.5 m/s as it passes through the lowest point. What is the tension in the rope at that point?
an aircraft flies at 850 fts through air at -40 f and 5 psia. the turbojet engine has a pressure ratio of 10 and the
At the end of the isothermalexpansion, the pressure is 600 kPa and the volume is 0.4 m3. Assuming the ideal gas model for air, determine the thermal efficiency.
a furnace wall as 0.5 m thick inner layer of fire clay brick k1.7wmk a 0.1 m thick layer of kaolin brickk0.12 and a
1045 steel is carburized at 650 degree c for 500 hr. the carbon concentration is 0.6 wt at a position of 3.7 mm beneath
calculate the force and pressure acting across the pelvis and at the feet of a 150 lbm person. model the body using
an inventor has proposed a multi-blade wind turbine. the downwind rotor is to have a diameter of 12.2 m. each blade is
the company you work for makes the casting for the rectangular pan 300 mm long x 200 mm wide x 60 mm deep with a 3 mm
a steam turbine has extractions to provide heating steam for the feedwater heaters in a power plant. the following
a bonding operation utilizes a laser to provide a constant heat flux q0 across the top surface of a thin
1. a natural gas engine has a bsfc of 9000 btushp-hour when producing 200 horsepower. how many btus per hour does the
A small hydroelectric power plant produces electrical power at a rate of 30 kW. The plant utilizes a stream of water that drops 40 m from a lake to the turbine and flows at a rate of 100 kg/s. What is the efficiency of the turbine-generator?
intake air to turbocharger for internal combustion engine is 100kpa at 300k. determine the turbocharger pressure ratio
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