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Air moving at 0.3 m/s blows over the top of a chest type freezer. The top of the freezer measures 0.9 m by 1.5m and is poorly insulated so that the surface remains at 10ºC. if the temperature of air is 30 ºC , make calculations for the maximum heat transfer by forced convention from the top of the freezer.
If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 85 km/h?
A roller coaster and its occupant’s have a combined mass of 800 kg. At a height of 70 m, the roller coaster has approximately zero speed. At the bottom, at maximum speed, a piston/cylinder apparatus is compressed adiabatically in order to bring the r..
A friend offers to sell you an experimental Stirling engine to power your house. The engine isguaranteed to last 15 years and is fueled by burning natural gas with a combined combustionand heat transfer efficiency of 0.90 and a generation efficiency ..
a ceramic bidet failed catastrophically in normal use causing serious lacerations to the person concerned. the facture
a piston-cylinder device contains a liquid-vapor mixture of water at 300k. during a constant-pressure process 750kj of
consider the photovoltaic solar panel of example 3.3. the heat transfer coefficient should no longer be takento be a
A cylinder is internally pressurized to a pressure of 100 MPa. This cause tangential and axial stress in the outer surface of 400 and 200 MPa respectively. Make a mohr circle representing of the stress in the outer surface. What maximum shear stress ..
the following linear failure envelopes for a rock mass are givenintact rockfriction angle 350cohesion 900 psitension
a cylindrical rod of an unknown material is subject to a force of 20000n. the cross sectional area is 0.5 cm2 and is of
a storage tank for natural ng has a top dome that can move up or down as gas is added or subtracted from the tank
Steam at 260 c and 1 atm flow through an 8-in. schedule-80 steel pipe at a rate of 10,000 lb/hr. estimate the value of h which applies at the inside pipe surface.
a vertical closed-loop geothermal heat pump is under consideration for a new 50000 ft2 school building in the area.
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