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The mass of all the air in the atmosphere contained above a 1-m2 area is to be contained in a spherical volume. Estimate the diameter of the sphere if the air is at standard conditions.
A US Department of Energy article states that a leak of one drip of hot water per second can cost $1.00 per month. Making reasonable assumptions about drop size and unit cost of energy, determine if this claim is reasonable.
a cart is moving at a constant absolute velocity vcart 5 kmh to the right. a high-speed jet of water at an absolute
a mass of 3kg of nitrogen at 100kpa and 20oc is contained in a piston-cylinder device. it is now expanded to a final
an airplane is flying at 300 mih at 4000 m standard altitude. as is typical the air velocity relative to the upper
a truck traveling at vo 60mph when the driver applies the brakes to come to stop the deceleration of the truck is
A constant force of F is applied to a block of weight w located on an inclined surface with angle of and friction coefficient u. A spring is acting on the block with constant K. if initially spring was compressed by distance d. Find velocity of block..
Determine the maximum permissible value of the load q if the allowable bending stress in the shelf is σallow= 7.5 MPa and the position of the supports is adjusted for maximum load carrying capacity.
circular copper rods of diameter d1mm and length l25mm areused to enhance heat transfer from a surface that is
n-butane c4h10 is burned with 80 percent theoretical air and the products of combustion an equilibrium mixture
A steam turbine is operating at a steady state with a mass flow rate of 3682 kg/h at the inlet. The power output of the turbine is 8700 kW. Steam enters the turbine at a pressure of 40 bar, temperature of 320 oC, and with a velocity of 13 m/s.
a rigid well-insulated tank with a volume of 3 fe contains air at p1 22 lbfin2 and t1 475 bullr. the air is stirred by
Discuss if this might be used to generate rather than use electrical energy. If so, what would be required? If not, why not?
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