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IrinaK [193]
3 years ago
7

According to the inverse square law of light, how will the apparent brightness of an object change if its distance to us triples

?
Physics
1 answer:
aleksley [76]3 years ago
4 0
According to the inverse square law of light, <span>apparent brightness will decrease by a factor of 9. Use the formula </span>B=L/(4*pD^2), to check it.
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Answer:

I would shout fore help if I was being raped or try to make him or her stop

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A cat is running at 24 m/s. It then accelerates at 7 m/s2. How long will it take the cat to reach a speed of 49 m/s?
kozerog [31]

Answer:

t should be 3.57 second

Explanation:

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Substitute each of the info given into the formula and calculate.

49 = 24 + (7)t

t = 3.57s

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4 years ago
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3 years ago
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A bullet fired vertically at a velocity of 36m/s .after 45 the bullet hit the top of a bulid how height is a bulid?​
zzz [600]

Answer:

The height of the building is 8,302.5 m

Explanation:

Given;

velocity of the projectile, u = 36 m/s

time of motion, t = 45 s

Let the upward direction of the bullet be negative,

The height of the building is calculated as;

h = ut - \frac{1}{2} gt^2\\\\h = (36\times 45) - (\frac{1}{2} \times 9.8 \times 45^2)\\\\h = 1620 - 9922.5\\\\h = -8,302.5 \ m\\\\The \ height \ of \ the \ building \ is \ 8,302.5  \ m

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3 years ago
Evan drew a diagram to illustrate radiation.
Vesna [10]

The correct answer is:

D. Electromagnetic waves.

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|Huntrw6|

8 0
3 years ago
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