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vovikov84 [41]
3 years ago
8

What is the electric force acting between two charges of −0.0085 C and −0.0025 C that are 0.0020 m apart?

Physics
2 answers:
dsp733 years ago
3 0
F=k \frac{ Q_{1} Q_{2}  }{ r^{2} }
where k=8.99e9
So (8.99e9)(-0.0085)(-0.0025)/(0.002)^2=4.7759e10N

katen-ka-za [31]3 years ago
3 0

Answer:

4.8•10^10 N

Explanation:

(9.00•10^9)(-0.0085)(-0.0025)

————————————————= 4.8•10^10

0.0020^2

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prisoha [69]

Answer:

- 278.34 kg m/s^2

Explanation:

The rate of the change of momentum is the same as the force.

The force that an object feels when moviming in a circular motion is given by:

F = -mrω^2

Where ω is the angular speed and r is the radius of the circumference

Aditionally, the tangential velocity of the body is given as:

v = rω

The question tells us that

v = 25 m/s

r = 7m

mv = 78 kg m/s

Therefore:

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ω = (25 m/s) / (7 m) = 3.57 (1/s)

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4 0
3 years ago
What keeps both the cars pressed down on the road? ​
mihalych1998 [28]

Answer:

Gravity

Explanation:

5 0
3 years ago
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mrs_skeptik [129]

Answer:

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The only choice which is higher than 400 Hz is 434 Hz, so this is the frequency that Rita will hear.

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2 years ago
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Answer:

See Explanation

Explanation:

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