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Liquid water at 0°C weighs 9,810 N/m3, and ice at the same temperature weighs 8,992 N/m3. Consider a system which is initially an ice cube 1 meter on a side. How much work does this system do on the atmosphere when it melts?
a 10-kg block is moving down along a plane incline at a 10 degree angle. the coefficient of kinetic friction between
a sample of argon of mass 10.4 g occupies 2100 ml at 30 degrees.i calculate the work done by the gas when is expands
a hydrogen tank 25 cm in diameter and 80 cm in height is charged to 150 atmospheres at room temperature 25 c. a
providing domestic hot water to a household typically requires 107 kj of energy per year. a typical electric water
a tank containing a fluid is stirred by a paddle wheel. to raise the temperature of the water in the tank from 14 c to
a medical warmer operates using a heat pump. saturated r-12 enters the compressor at a temperature of -10 c and exits
a piston-cylinder device contains 10 kg of water 150 c . initially 2 kg it is vapour phase. the water is then heated
a refrigerant at -40degc flows inside a copper pipe inside diameter 3 cm outside diameter 3.4 cm with a convective
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work done by the mass.
measurements are made on a particular part. the results are approximately normally distributed with a mean of 1.250
Knowing that in the position shown the rod has angular velocity of 4 rad/s clockwise; determine the angular velocity of the rod after it has rotated through a 90°.
a design specification requires that a 1008 pound vehicle be able to climb a 38 degree incline at 43 mph. what is the
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