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Jlenok [28]
2 years ago
12

Is there any terminal identification mark for rheostat as positive, negative?

Physics
1 answer:
Lapatulllka [165]2 years ago
7 0
Rheostats are pure resistances with a provision to vary the resistance connected in the circuit with a moving contact. Resistance do not have polarities
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The Palo Verde nuclear power generator of Arizona has three reactors that have a combined generating capacity of 3.937×109 W . H
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Answer:

t = 2.68 x 10¹⁴ years

Explanation:

First we need to find the amount of energy that Sun produce in one day.

Energy = Power * Time

Energy of Sun in 1 day = (3.839 x 10²⁶ W)(1 day)(24 hr/1 day)(3600 s/ 1 hr)

Energy of Sun in 1 day = 3.32 x 10³¹ J

Now, the time required by the nuclear power generator, in years, will be:

Energy of power generator = Energy Sun in 1 day = 3.32 x 10³¹ J

3.32 x 10³¹ J = Power * Time

3.32 x 10³¹ J = (3.937 x 10⁹ W)(t years)(365 days/1 year)(24 hr/1 day)(3600 s/ 1 hr)

t = 3.32 x 10³¹ /1.24 x 10¹⁷

<u>t = 2.68 x 10¹⁴ years</u>

8 0
3 years ago
Laws that implemented the consumers' right to be informed forbid __________.
Reptile [31]

Laws that implemented the consumers' right to be informed forbid misleading advertising.

Answer is C.

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A current of 12 A flows for 20 minutes into an electric cooker. How much charge has the cooker used?
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