Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essenti
2 answers:
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Answer:
The spring force constant is .
Explanation:
We are told the mass of the ball is , the height above the spring where the ball is dropped is
, the length the ball compresses the spring is
and the acceleration of gravity is
.
We will consider the initial moment to be when the ball is dropped and the final moment to be when the ball stops, compressing the spring. We supose that there is no friction so the initial mechanical energy is equal to the final mechanical energy
:
Initially there is only gravitational potential energy because the force of the spring isn't present and the speed is zero. In the final moment there is only elastic potential energy because the height is zero and the ball has stopped. So we have that:
If we manipulate the equation we have that:
Answer:
The diameter of wire should be m
Explanation:
Given:
Current density
Current A
From the formula of current density,
Where area of cylindrical wire =
m
For finding the diameter of wire,
m
Therefore, the diameter of wire should be m