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Travka [436]
3 years ago
13

Which are complete descriptions of the momentum of an object? Circle all that apply. a. 2.0 kg/s b. 7.2 kg•m/s, right c. 6.1 kg•

m/s2, down d. 4.2 m/s, east e. 1.9 kg•m/s, west f. 2.3 kg•m/s
Physics
1 answer:
Paul [167]3 years ago
8 0
<span>mutations due to exposure to chemicals</span>
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You run 100 meters in 50 seconds. Calculate your speed, label with m/s
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Fill in the blank. Consider the inverse square law: When light leaves a light bulb, it spreads out over more and more space as i
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Answer:

Explanation:

Intensity of light is inversely proportional to distance from source

I ∝ 1 /r²  where I is intensity and r is distance from source . If I₁ and I₂ be intensity at distance r₁ and r₂ .

I₁ /I₂ = r₂² /r₁²

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I₁ / I₂ = 16

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Why are electromagnets more useful than permanent magnets in many
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2 years ago
Read 2 more answers
Find the gravitational potential at a point on the earth surface. Take mass as of earth as 5.98×10^24kg,it's radius as6.38×10^6n
andrew-mc [135]

Answer:

-6.25\cdot 10^7 J

Explanation:

The gravitational potential at a point on the Earth surface is given by:

U=-\frac{GM}{R^2}

where

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M=5.98×10^24kg is the Earth's mass

R=6.38×10^6 m is the Earth's radius

Substituting the numbers into the equation, we find

U=-\frac{(6.67\cdot 10^{-11})(5.98\cdot 10^{24})}{(6.38\cdot 10^6)}=-6.25\cdot 10^7 J

5 0
3 years ago
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