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A 1.2-cm-diameter silver sphere initially at 25°C is suspended in a room filled with saturated steam at 100°C. Using the lumped system analysis, determine how long it will take for the temperature of the ball to rise to 50°C. Also, determine the amount of steam that condenses during this process and verify that the lumped system analysis is applicable. (There is a textbook solution for this problem however it uses EES software, this needs to be solved manually.)
bananas are to be cooled from 24degc to 13degc at a rate of 215 kgh by a refrigeration system. the power input to the
in a tempering process glass plate which is initially at a uniform temperature ti is cooled by suddenly reducing the
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.
determine the critical load on an air cylinder rod if the rod has a maximum extension of 0.5 m. the 25-mm-dia rod is
Four kilograms of water initially at 200 degree Celsius and 0.5 MPa undergo an isothermal, internally reversible compression process to the saturated liquid state. Determine the work and heat transfer involved in the process (in kJ). Sketch the proce..
a 12.7 mm diameter twist drill is used to drill a hole in a low-carbon steel workpiece using a feed of 0.3 mmrev and a
what is the time required to empty 8m diameter 3m high swimming pool thourghh a 3cm diameter 25 meter long horizontal
a fluid has a viscosity of x nsm2 and is placed in a concentric cylinder viscometer. the gap width is g mm and the
A vertical piston-cylinder device contains a gas at a pressure of 100 kPa. The piston has a mass of 5 kg and a diameter of 12 cm. Pressure of the gas is to be increased by placing some weights on the piston. Determine the local atmospheric pressure a..
An air-standard Otto cycle has a compression ratio of 6. At the beginning of compression, the pressure is 100 kPa and the temperature is 300 K. During the heating process, the temperature is raised to 2500 K. Assume that the cold air-standard assumpt..
a raindrop of mass 3.36 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance.
the temperature distribution in a fluid is given by t 10x 5y where x and y are the horizontal and vertical coordinates
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