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Explain why the radiation leaving an enclosure (e.g. an oven kept at temperature T) through a small hole is a very good approximation for blackbody radiosity at temperature T.
a supply of steam at 100 kpa 150degc is needed in a hospital for cleaning purposes at a rate of 15 kgs. a supply of
both a gage and a manometer are attached to a gas tank to measure its pressure. if the reading on the pressure gage is
1. the contraption below has a face cam with an elliptic pro?le pushing a push rod against a spring. the face cam is
airflow through a long 0.2 m2 air conditioning duct maintains the outer duct surface temperature at 10 c. if the
at steady state a well-insulated compressor takes in air at 60 degrees f 14.2 lbfin2 with a volumetric flow rate of
A 10 lbm block is pushed down a frictionless incline with a force of 5 lbf. the incline is 30 degrees relative to the horizontal. if the block starts from rest, what is its speed after it has been pushed 12 ft. Assume that gravity is 32.0 ft/ sec^2
What is the discharge revised discharge pressure (guage pressure) of the compressor ? Is the assumption of change in temperature valid for calculating the discharge pressure of the compressor ?
An accident occurs when car A rear-ends car B at a stoplight. The mass of car A is 1500kg and the mass of car B is 1000 kg. Car B was initially at rest with the brakes locked. Skid marks indicate car B slid 12 m after the impact. Assuming that the co..
A work platform is elevated on the end of a boom that has the ability to extend its length and vary its angle with respect to the ground. The platform width is large compared to the boom diameter so that it is possible to load the boom eccentrically ..
a stoped out area with a volume of 20000 m3 is to be used as a receiver. it is to be charged to an absolute pressure of
consider a hollow steel sphere of inside radius r110 cm and outside radius of r220 cm. the thermal conductivity of the
at a point on the free surface of a machine part the strains are ex1200 mu ey300mu yxy700 mu. use mohrs circle to
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