Physics, 13.07.2019 11:00 duncanswart1558
Aboat moves with a speed of +2.5 m/s in a direction 25° north of east. if the mass of the boat is 15,000 kg, what is the momentum in the northward direction? a. +15,848 kg-m/s b. +33,987 kg-m/s c. +37,500 kg-m/s d. +339,865 kg-m/s
Answers: 1
Physics, 22.06.2019 13:30, brsglover8355
6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
Answers: 2
Physics, 22.06.2019 19:20, anaiyamills
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Aboat moves with a speed of +2.5 m/s in a direction 25° north of east. if the mass of the boat is 15...
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