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olga nikolaevna [1]
2 years ago
11

What current is used to power the Untied States power grid? O alternating current O direct current​

Physics
2 answers:
QveST [7]2 years ago
4 0

Answer:

alternating

Explanation:

it was right on my quiz

Alina [70]2 years ago
3 0

Answer:

Alternating

Explanation:

It is alternating because it is easy to distribute long distance.

Direct current is found in batteries and have large voltage drop over distance.

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Answer:74.33 feet per sec

Explanation:

Given

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From figure

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therefore its velocity magnitude is given by

\frac{\mathrm{d} x}{\mathrm{d} t}

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140\times \frac{\mathrm{d} x}{\mathrm{d} t}=148.66\times 70

\frac{\mathrm{d} x}{\mathrm{d} t}=74.33 feet\ per\ sec

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