Forces that affect objects without touching them are called field forces. Is gravity a field force? Explain.

1 answer:

3 0

Yes, gravity is a field force because gravity starts from the inside layers of the earth, but doesn't touch us physically, an example of this would be that if we jump, gravity would pull us back down, but without touching you physically.

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What substances were found in the innermost regions (within about the inner 0.3 AUAU) of the solar system before planets began t

julsineya [31]

Answer:

Hydrogen and helium compounds.

Explanation:

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This cloud is a type of interstellar cloud and its density and size permit the formation of molecules, most commonly molecular hydrogen.

Therefore the principal substances were found before planets began to form are hydrogen and helium compounds, besides Rocks, metals, most of them in gaseous form.

I hope it helps you!

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A furlong is an old british unit of length equal to 0.125 mi, derived from the length of a furrow in an acre of ploughed land. a

castortr0y [4]

The speed of light is: c = 3x10^8 m/s 

or

c = 186,000,000 miles/sec = 1.86x10^8 mi/s

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Therefore,

c =1.86x10^8 mi/s(1furl/0.125mi)(1.2096x10^6s/fort)

c = 18x10^14 furlong/fortnight = 18x10^8 Mfurlong/fortnight

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Which of the following changes would make a heat engine waste more energy as heat

Komok [63]

A decrease in it's operating temperature would make a heat engine less efficient. This is because in order to operate, a heat engine needs to be hot and maintain that temperature.

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Why is it important that radioisotopes used in diagnostic tests have short half-lives? 20 A) These radioisotopes have a greater

LiRa [457]

Answer:

Option B) This minimizes the harmful side effects of the radiations

Explanation:

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ivann1987 [24]

Answer:

Explanation:

momentum depends on weight and speed

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