Physics, 29.08.2019 22:50 evanwall91
Jim stands beside a wide river and wonders how wide it is. he spots a large rock on the bank directly across from him. he then walks upstream 65 strides and judges that the angle between him and the rock, which he can still see, is now at an angle of 30o . jim measures his stride to be about 0.8 m long. estimate the width of the river.
Answers: 1
Physics, 22.06.2019 12:10
Energy flows from the producer level to the level. is called
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Physics, 22.06.2019 13:00
What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud
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Physics, 22.06.2019 14:20
4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)
Answers: 3
Jim stands beside a wide river and wonders how wide it is. he spots a large rock on the bank directl...
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