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Alenkasestr [34]
3 years ago
8

Plz help me I’m a desperate little boy

Physics
1 answer:
Neporo4naja [7]3 years ago
5 0

It is the first one. But if you have this question you are not a little boy

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What force holds the earth-moon system together?
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Gravity holds the system together
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One least interesting thing about collisions?
luda_lava [24]
A change in momentum is called impulse.
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How much work is done (by a battery, generator, or some other source of potential difference) in moving Avogadro's number of ele
konstantin123 [22]

Answer:

-1486 KJ

Explanation:

The work done by an electric field on a charged body is:

W = ΔV * q

where ΔV = change in voltage

q = total charge

The total charge of Avogadro's number of electrons is:

6.0221409 * 10^(23) * -1.6023 * 10^(-19) = -9.65 * 10^(4)

The change in voltage, ΔV, is:

9.20 - (6.90) = 15.4

Therefore, the work done is:

W = -9.65 * 10^(4) * 15.4 = -1.486 * 10^6 J = -1486 KJ

The negative sign means that the motion of the electrons is opposite the electrostatic force.

5 0
3 years ago
A leaf floating down from a tree is an example of an object in free fall.<br> A. True<br> B. False
BlackZzzverrR [31]

Answer:

its false

Explanation:

because if an leaf floats down from a tree it is not considered an object for a free-fall

4 0
3 years ago
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A 200. N wagon is to be pulled up a 30 degree incline at constant speed. How large a force parallel to the incline force is need
Sever21 [200]
For the question above, here is the equation to follow:
<span>F = mgsinα = Wsinα
      =200 x 0.5 = 100 N
</span>OR

<span>Sin30 * 200N = 100 N
</span>
The asnwer is 100N. I hope this answer helps.
3 0
3 years ago
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