positively charged ebonite rod is brought close to a small ball. The rod does not touch the ball, which is made from a conductin
g material. The ball is electrically neutral. Which one of the following statements is true? The rod neither attracts nor repels the ball. The rod repels the ball. As the rod is brought closer to the ball, the force changes from an attractive force to a repulsive force. The rod attracts the ball
1 answer:
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To solve this problem it is necessary to apply the concepts related to the Third Law of Kepler.
Kepler's third law tells us that the period is defined as
The given data are given with respect to known constants, for example the mass of the sun is
The radius between the earth and the sun is given by
From the mentioned star it is known that this is 8.2 time mass of sun and it is 6.2 times the distance between earth and the sun
Therefore:
Substituting in Kepler's third law:
Therefore the period of this star is 3.8years
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