Two m^3 of air in a rigid, insulated container fitted with a paddle wheelis initially at 293 k, 200 kpa. the air receives 710 kj by work from the paddle wheel. assuming the ideal gas model with cv=0.72 kj/kg. k, determine for the air (a) the mass, in kg, (b) final temperature, in k, and (c) the amount of entropy produced, in kj/k.
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Physics, 22.06.2019 13:20
Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.
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Physics, 22.06.2019 14:30
An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices
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Physics, 22.06.2019 18:30
Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.
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Physics, 22.06.2019 21:50
Ajoint produces movement when its angle decreases. which type of movement is it?
Answers: 1
Two m^3 of air in a rigid, insulated container fitted with a paddle wheelis initially at 293 k, 200...
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