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A big fireplace can be approximated as 1.5 m3 of volume. It's made of firebrick with properties: ? = 2,600 kg/m3 and c = 950 kJ/kg-C. It is subjected to 50 MW average of radiation and convection heat transfer from the fire over a 2 hour period. Assuming all the brick is at a constant temperature and no heat transfer on the other side (both not really the case), what is the brick's final temperature if it was initially at room T (20 C).
air at a stagnation pressure of 450 kpa and stagnation temp of 400k flows through a converging nozzle whose throat area
A spur gear has 48 teeth with a diametral pitch of 8 and a pressure angle of 20 deg. The face width is 0.75 inches. If the gear is transmitting 25 HP at 250 rpm
A) Calculate the velocity in the tunnel test section. B) Compute the total pressure at the test section.
a pump supplies oil at 20 gpm to a 2 in diameter double-acting hydraulic cylinder. if the load is 1000lbsextending and
How much heat is required to raise the temperature of 10 pounds of water from 50 degrees fahrenheit to 70 degrees fahrenheit?
why does turbulent flow distribution adhere more closely to the idealization of one dimensional flow than laminar flow?
one kilogram of air is compressed polytropically n1.3 from a pressure of 100 kpa to a pressure of 1 mpa as the volume
imagine that the heart acts as a pump. blood enters the heart from the lungs at 6mm hg and leaves to the rest of the
both a gage and manometer are attached to a gas tank to measure its pressure. if the reading on the pressure gage is 80
a thick cylinder has an inside diameter of 60 mm and an outside diameter of 100 mm. it is pressurised internally until
two rigid tanks that are each 20 ft3 are connected by a line containing a control valve that is initially closed. tank
water is the working fluid in an ideal rankine cylce. saturated vapors enters the turbine at 16mpa and the condensor
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