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Answer:
(D) It is equal to the original velocity of the skater.
Explanation:
The velocity of the center of mass of a system is
The velocity of the center of mass is constant if there is no external force, because the total momentum of the whole system is conserved.
So, before the snowball is thrown, the velocity of the center of mass is equal to that of the skater. This velocity will always be equal to the velocity of the center of mass of the system.
Answer:
The value of charge is 35.3 C
Explanation:
Given:
Force N
Electric field
According coulomb's law,
Where charge that experience a force,
For finding the value of charge,
C
Therefore, the value of charge is 35.3 C