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bezimeni [28]
3 years ago
5

Two plastic balls suspended by strings are placed close to each other. If they have the same charge, how will they interact with

each other?
a) they will repel each other.
b) they will attract each other.
c) they will not interact.
d) they will move in circles.
Physics
2 answers:
vampirchik [111]3 years ago
8 0
<span>Two plastic balls suspended by strings are placed close to each other. If they have the same charge then they will repel each other.</span>
Arada [10]3 years ago
3 0

Answer: Option (a) is the correct answer.

Explanation:

It is known that when two objects which have opposite or unlike charges come in contact with each other then they tend to attract each other.

Whereas when two objects which have same or like charges come in contact with each other then they tend to repel each other.

Therefore, we can conclude that when two plastic balls suspended by strings are placed close to each other and they have same charge then  they will repel each other.

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Where r is the radius and T is the period.

For this case the person is standing at a latitude 71.9^{\circ}. Remember that the latitude is given from the equator. The configuration of this system is shown in the image below.

It is necessary to use the radius at the latitude given. That radius can be found by means of trigonometric.

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r_{71.9^{\circ}} = 1.97x10^{6} m

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v = \frac{2 \pi (1.97x10^{6} m)}{24h}

Notice that the period is the time that the Earth takes to give a complete revolution (24 hours), this period will be expressed in seconds for a better representation of the velocity.

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\frac{0.010m/s^{2}}{9.8 m/s^{2}} = 1.020x10^{-3}m/s^{2}

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