Which statement is true about a polarized object?
2 answers:
Answer: Option (3) is the correct answer.
Explanation:
When an object is polarized then it means that if a negatively charged object is brought near a neutral atom then a positive charge will develop on the neutral object near the area of contact.
Whereas a negative charge will develop on the opposite side neutral object which is not in contact with the negatively charged object.
Hence, in a polarized object there are equal number of both positive and negative charges.
Thus, we can conclude that the statement number of positive and negative charges can be the same, is true about a polarized object.
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Explanation:
It is given that,
Diameter of the semicircle, d = 45 m
Radius of the semicircle, r = 22.5 m
Speed of greyhound, v = 15 m/s
The greyhound is moving under the action of centripetal acceleration. Its formula is given by :
We know that,
Hence, this is the required solution.