An l 1-m-long vertical copper tube ofinner diameter di 18 mm and wall thickness 1 2 mm contains liquid water at t 0°c. on a winter day air at v = 2.5 m/s, t, : -20°c is in cross flow over the tube. determine the heat loss per unit mass from the water when the tube is full of water, in w/kg. evaluate the properties of copper at 300 k. w/kg the tolerance is +/-2%
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Physics, 21.06.2019 17:00
Which energy transformation occurs in the core of a nuclear reactor? nuclear energy mechanical energy nuclear energy - thermal energy thermal energy -- nuclear energy mechanical energy - nuclear energy
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3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?
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Physics, 22.06.2019 22:00
Ihave this 50 question test the layer of earth's atmosphere where atoms and molecules escape into space is referred to as the a) exosphere b) ionosphere. c) mesosphere d) thermosphere
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An l 1-m-long vertical copper tube ofinner diameter di 18 mm and wall thickness 1 2 mm contains liqu...
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