Physics, 06.12.2019 03:31 blueval3tine
Cold water (cp = 4.18 kj/kg·k) enters a crossflow heat exchanger at 14°c at a rate of 0.35 kg/s where it is heated by hot air (cp = 1.0 kj/kg·k) that enters the heat exchanger at 65°c at a rate of 0.8 kg/s and leaves at 25°c. determine the maximum outlet temperature of the cold water and the effectiveness of this heat exchanger.
Answers: 3
Physics, 21.06.2019 22:50
If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)
Answers: 2
Physics, 21.06.2019 22:50
Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.
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Physics, 22.06.2019 19:30
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.
Answers: 1
Physics, 22.06.2019 22:00
Should we celebrate the voyages of zheng he mini q answer key
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Cold water (cp = 4.18 kj/kg·k) enters a crossflow heat exchanger at 14°c at a rate of 0.35 kg/s wher...
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