Physics, 13.03.2022 08:00 katelynbychurch
A 20 kg box is being pulled across a floor by a horizontal rope. The tension in the rope is 99 newtons. The coefficient of the friction is 0.25, and air resistance is negligible. What is the weight of the box in newtons? asap please
Answers: 3
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If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer
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Like a key in a lock, the shape of the. must bind with the. of the recieving neuron
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Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
A 20 kg box is being pulled across a floor by a horizontal rope. The tension in the rope is 99 newto...
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