3 years ago

How do electric motors create movement?

Physics

1 answer:

melomori [17]3 years ago

7 0

Answer:

D by spinning magnets to induce electric current.

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Einstein's theory of general relativity is currently the best explanation of gravity.Why has this theory not been replaced with

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Answer:

Option C, It still explains the experimental evidence pertaining to gravity

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2 years ago

Most of the universe is believed to be ______

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B. dark matter

Explanation:

The<u> current theory</u> is that the dark matter composes about 85% of the matter in the whole universe, possibly in large majority made out of unknown material. What we found so far is that the majority of the dark matter is NOT composed of baryonic material (the stuff that makes stars and planet).

We know dark matter exists and we suppose there's a HUGE amount of it that fills the gaps between stars and planets.

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3 years ago

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A(n) __________ refers to a substance or treatment that is often used in an experiment but does not have an actual medicinal or

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placebo

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1 year ago

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Sarah, who has a mass of 55 kg, is riding in a car at 20 m/s. She sees a cat crossing the street and slams on the brakes! Her se

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-2200 N

Explanation:

The change in momentum of Sarah is equal to the impulse, which is the product between the force exerted by the seatbelt on Sarah and the time during which the force is applied:

$\Delta p=I\\m \Delta v = F \Delta t$