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Vanyuwa [196]
3 years ago
9

How much power does a hair dryer require to transform 198 000 J of energy in 15 mins?

Physics
1 answer:
Marina86 [1]3 years ago
7 0

(198,000 joule / 15 minute) x (minute / 60 sec) = 220 joule/sec = <em>220 watts


</em>
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Coal is how much worse than natural gas when it comes to carbon dioxide emissions?
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Answer:

True

Explanation:

Its worse

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2 years ago
Heat of ______ is the energy needed for a substance to change from a liquid to a gas
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Heat of vaporization

Explanation:

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3 years ago
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What is the state of y when y = k/x, x is halved.
tangare [24]

Answer:

y becomes doubled.

Explanation:

If;

       y  = \frac{k}{x}  

what is the state of y when x is halved;

  the given expression is an inverse relationship. When y increases, x is supposed to decrease and vice versa.

 

 if x is halved; x  = \frac{x}{2}

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Now compare :

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8 0
3 years ago
A jet plane acceleration along a straight run way from rest to a speed of 140 m/s in 50 seconds when it took off. Calculate:
labwork [276]

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7 0
3 years ago
What is the si unit of power?
grandymaker [24]
The SI unit of power is the watt<span>, which is equal to one </span>joule/<span>per second.

So I would say Watt is the answer. Hope it helped. :)

</span>
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3 years ago
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