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(a) Find the rate of energy flow through a copper block of cross-sectional area 15 cm^2 and length 8.0 cm when a temperature difference of 30 degree C is established across the block. Repeat the calculation assuming the material is
(b) a block of stagnant air with these dimensions;
(c) a block of wood with these dimensions.
a small air turbine with an isentropic efficiency of 80 should produce 270 kjkgof work. the inlet temperature is 1000 k
a weightless box with a 0.4m by 0.4m square base is floating horizontally on the water surface. it contains a 0.2m
the centerboard of a sailboat is 2.5m long and has a chord of 1m. approximate the centerboard as a flat plate in water
Research and explain the difference between phase change via evaporation and phase change via boiling. Name one device or consumer product that uses each of these phase change mechanisms. Cite your source(s)
Determine the mode shapes and frequencies of vibration of the system of cars by Sweeping the rigid body mode
blood at 37degc enters the left ventricle lv of a skier at a rate of 100 mls. at time t 0 the skier steps outside and
suppose a hollowed cylinder is made from an aluminum alloy that has the following properties su 600 mpa sy 500 mpa
a molybendenum metal pin is 25 mm long and 2mm in diameter. the air surrounding the pin is 200 degrees c the walls of
2 moles of an ideal gas expands isothermally and reversibly from 50.0 dm3 to 85.8 dm3 at a temperature of 68.9
you are asked to design a heating system for a swimming pool that is 2 m deep 25 m long and 25 m wide. your client
if the force exerted on cable ab by the motor is f 100t32 n where t is in seconds determine the 50-kg crates velocity
the stators in a gas turbine are designed to increase the kinetic energy of the gas passing through them adiabatically.
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