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Solar energy impinging on the outer layer of earth’s atmosphere (usually called “solar constant”) has been measured as 1367W/m^2. What is the solar constant on Mars (neglecting any atmospheric effects)?
(Distance Earth to Sun =1.496 × 1011 m, Mars to Sun = 2.28 × 1011 m)
pneumatic nail driver uses .02 ft3 of air at 100 psia and 1 btu of energy per nail must drive 500 nails with a tank no
water is pump from a lake to a storage tank at 18m above at a rate of 70 ls while consuming 20.4 kw of electric power.
it has been shown that the cop for a carnot refrigerator. is greater than the cop for a real refrigerator . show the
the power p required to drive a fan is believed to depend on density p flow rate q impeller dia. d and angular veloctiy
a 1m3 rigid tank initially contains 5kg of steam at 150degc. a relief valve on top of the tank is opened to allow steam
analysis using ansys fea is required. linear structural vibrationmodal and steady state thermal analysis can be use to
Find the specific enthalpy of R22 at 28 oC and a specific internal energy of 120.58 kJ/kg. Evaluate T, v, and h for water at 1.0 MPa and a specific internal energy of 2692.9 kJ/kg. Consider water at a state fixed by a pressure equal to 20 lbf/in.2 an..
Consider a cylindrical titanium wire 3.0 mm in diameter and 2.5 x 104 mm long. Calculate its elongation when a load of 500N is applied, assuming that the deformation is totally elastic.
a line containing nitrogen at 540or and 75 psi is connected to a turbine that exhausts to an initially empty closed
a tennis racket hits a tennis ball with a force of fat-bt2 where a1 1280 nms b1 460 nms2 and t is the time in
a rugged instrument used frequently for monitoring gas velocity in smoke stacks consists of two open tubes oriented to
an actual refrigerator absorbs 500 kj of heat from a sink at 250 k and reject 660 kj of heat to environment at 300 k.
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