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the outer surface of a spacecraft in space has an emissivity of 08 and a solar absorptivity of 03 if solar radiation is
reconsider prob 9-63 using ees or other software plot the convection heat transfer coefficient as a function of the
a 200-ft-long section of a steam pipe whose outer diameter is 4 in passes through an open space at 50degf the average
reconsider prob 9-43 using ees or other software plot the amount of power the transistor can dissipate safely as a
a 3-m-internal-diameter spherical tank made of 1-cm-thick stainless steel is used to store iced water at 0degc the tank
it is well known that wind makes the cold air feel much colder as a result of the wind chill effect that is due to the
consider a flat-plate solar collector placed horizontally on the flat roof of a house the collector is 5 ft wide and 15
a thin metal plate is insulated on the back and exposed to solar radiation on the front surface the exposed surface of
a 4-m x 5-m x 6-m room is to be heated by one ton 1000 kg of liquid water contained in a tank placed in the room the
consider a refrigerator whose dimensions are 18 m x 12 m x 08 m and whose walls are 3 cm thick the refrigerator
consider a flat-plate solar collector placed on the roof of a house the temperatures at the inner and outer surfaces of
consider a house in atlanta georgia that is maintained at 22degc and has a total of 20 m2 of window area the windows
a 50-cm-long 2-mm-diameter electric resistance wire submerged in water is used to determine the boiling heat transfer
the force f of the wind blowing against a building is given by where v is the wind speed rho the density of the air a
the volume rate of flow q through a pipe containing a slowly moving liquid is given by the equationwhere r is the pipe
a tank of oil has a mass of 25 slugsa determine its weight in pounds and in newtons at the earths surfaceb what would
1 a certain object weighs 300 n at the earths surface determine the mass of the object in kilograms and its weight in
1 estimate the number of pounds of mercury it would take to fill your bathtub list all assumptions and show all
1 obtain a photographimage of a situation in which the viscosity of a fluid is important print this photo and write a
1 nitrogen is compressed to a density of 4 kgm3 under an absolute pressure of 400 kpa determine the temperature in
develop a computer program for calculating the density of an ideal gas when the gas pressure in pascals 1abs2 the
1 a tire having a volume of 3 ft3 contains air at a gage pressure of 26 psi and a temperature of 70 degf determine the
the helium-filled blimp shown in fig p152 is used at various athletic events determine the number of pounds of helium
1 a rigid tank contains air at a pressure of 90 psia and a temperature of 60 degf by how much will the pressure
clouds can weigh thousands of pounds due to their liquid water content often this content is measured in grams per