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jasenka [17]
3 years ago
14

A car goes from point A to point B, five miles away and then returns to point A. The car is going 15 mph.

Physics
1 answer:
Sergeeva-Olga [200]3 years ago
3 0

the velocity would be 0 mph

The answer is B.

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Give reason.<br><br><br>b} String roller is an example of wheel and axel .Why?<br><br>​
Leokris [45]

Explanation:

string roller is called an example of wheel and axel because The thin rod which needs to be turned is called the axle and the wider object fixed to the axle, on which we apply force is called the wheel.

hence the we apply force on the roller and the string gets tight.

8 0
3 years ago
A uniformly charged ring of radius 10.0 cm has a total charge of 50.0 μC Find the electric field on the axis of the ring at 30.0
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Answer: 4.27 *10^6 N/C

Explanation: In order to calculate the electric field along the axis of charged ring we have to use the following expression:

E=k*x/(a^2+x^2)^3/2    where a is the ring radius and x the distance to the point measured from the center of the ring.

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E= (9* 10^9* 0.3* 50 * 10^-6)/(0.1^2+0.3^2)^3/2

then

E=4.27 * 10^6 N/C

8 0
3 years ago
When touched by a plastic straw, the metal sphere will do what?
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5 0
3 years ago
How does a car get energy?
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Explanation:

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6 0
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The image will form in the vicinity of F. Its nature will be small and inverted 
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