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Zina [86]
3 years ago
5

PLEASE HELP AND HURRY

Physics
2 answers:
4vir4ik [10]3 years ago
6 0

Answer:

C. POSITIVE

(Sorry if wrong)

gavmur [86]3 years ago
4 0

Answer:

C positive

Explanation:

It keeps moving in a positive way over and over

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heart failure, heart attack,

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heart failure, heart attack,

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Light sources send out light waves that_____________.
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A. Travel in one direction

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light can be reflected and bent but light originally travels in one direction in straight lines

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A + 32.2 μC charge feels a 0.544 N force from a + 12.3p μC charge. How far apart are they? (u stands for micro.) [?] m
love history [14]

Answer:

r = 2.55 m

Explanation:

Given that,

First charge, q₁ = 32.2 μC

Second charge, q₂ = + 12.3 μC

The force between charges, F = 0.544 N

We need to find the distance between charges. The force between two charges is given by the formula as follows :

F=k\dfrac{q_1q_2}{r^2}\\\\r=\sqrt{\dfrac{kq_1q_2}{F}} \\\\r=\sqrt{\dfrac{9\times 10^9\times 32.2\times 10^{-6}\times 12.3\times 10^{-6}}{0.544}} \\\\r=2.55\ m

So, the charges are 2.55 m apart.

5 0
3 years ago
Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloud. The maxi
Korolek [52]

Answer:

2C  charge will flow from ground and cloud

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We have given rate rate of flow of charge \frac{dq}{dt}=20000C/sec

Time is given as t=100\mu sec=100\times 10^{-6}=10^{-4}sec

WE have to find the how much charge flows between the ground and cloud in this time

So the charge flow is given by \frac{dq}{dt}\times t=20000C/sec\times 10^{-4}=2C

So 2C  charge will flow from ground and cloud

8 0
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Please help me I need this for a test
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