Physics, 17.10.2019 16:20 animeisstupid6
Two cylindrical rods are identical, except that one has a thermal conductivity k1 and the other has a thermal conductivity k2. as the drawing shows, they are placed between two walls that are maintained at different temperatures tw (warmer) and tc (cooler). when the rods are arranged as in part a of the drawing, a total heat q' flows from the warmer to the cooler wall, but when the rods are arranged as in part b, the total heat flow is q. assuming that the conductivity k2 is twice as great as k1 and that heat flows only along the lengths of the rods, determine the ratio q'/q. express your answer as a number with no units.
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Physics, 22.06.2019 03:30
What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.
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Physics, 22.06.2019 19:00
1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)
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Two cylindrical rods are identical, except that one has a thermal conductivity k1 and the other has...
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