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An air-conditioning unit with a coefficient of performance of 2.93 provide 5,000 Btu/h of cooling while operating during the cooling season 8 hours per day for 125 days. If you pay 10 cents per kW·h for electricity, determine the cost, in dollars, for the cooling season.
a pump is located 4.5 m to one side of and 3.5 m above a reservoir. the pump is designed for a flow rate of 6 ls. for
a weight attached to a spring of stiffness 525 nm has a viscous damping device. when the weight is displaced and
a bar of negligible mass fixed with a tip mass forms part of a machine used to punch holes in a sheet of metal as it
What are the standard S.I. And English based units for reporting strain? What are the standard S.I. And English based units for reporting Youngs Modulus?
a helical tension spring is made of 1.2 mm wire having a yield strengths of 1280 mpa tension and 740 mpa torsion. the
the potential for air pollution by particulate matter pm2.5 andor pm10 is best assessed by constructing the terminal
consider a thermal energy reservoir at 1000 k that can supply heat at a rate of 100000 kjh. determine the exergy of
a 45 kg machine is mounted on a spring of stiffness 8 times 10 5 nm. when the machine operates at 32 hz. the machines
two wires have the same length and the same resistance. one is made from gold and the other from tungsten. obtain the
two streams of air mix together. the first stream state 1 has 4 kgs of air entering at 300k 1 bar. the second stream of
you deposit 10000 in a savings account that earns 7.5 simple interest per year. what is the minimum number of years you
considerr mach 2 flow in a twodimensional rectangular channel of length 5 m and height 1 m. the bottom wall of the
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