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steposvetlana [31]
3 years ago
11

If charges flow very slowly through a metal, why does it not require several hours for a light to come on when you throw a switc

h?
Chemistry
1 answer:
Harlamova29_29 [7]3 years ago
6 0
T<span>he charges themselves may not move fast, but the force upon them does. The electric field set up by the battery or generator propagates through the wires at the speed of light.

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
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The specific heat of ethanol is 2.44 J/g ֯C. How many kJ of energy are required to heat 50.0 grams of ethanol from -20 ֯C to 68
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Answer:

Heat energy required (Q) = 10.736 KJ

Explanation:

Given:

Specific heat of ethanol (C) = 2.44 J/g °C

Mass of ethanol (M) = 50 gram

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Final temperature (T1) = 68°C

Find:

Heat energy required (Q) = ?

Computation:

Change in temperature (ΔT) = 68°C - (-20°C)

Change in temperature (ΔT) = 88°C

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Heat energy required (Q) = (50)(2.44)(88)

Heat energy required (Q) = 10,736 J

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