Answer:
The time rate of change of the electric field between the plates is 
Explanation:
From the question we are told that
The radius is 
The distance of separation is 
The current is 
Generally the electric field generated is mathematically represented as
Where 
is the permitivity of free space with a value
So the time rate of change of the electric field between the plates is mathematically represented as
But 
So
substituting values
Answer:
The spring constant is 60,000 N
The total work done on it during the compression is 3 J
Explanation:
Given;
weight of the girl, W = 600 N
compression of the spring, x = 1 cm = 0.01 m
To determine the spring constant, we apply hook's law;
F = kx
where;
F is applied force or weight on the spring
k is the spring constant
x is the compression of the spring
k = F / x
k = 600 / 0.01
k = 60,000 N
The total work done on the spring = elastic potential energy of the spring, U;
U = ¹/₂kx²
U = ¹/₂(60000)(0.01)²
U = 3 J
Thus, the total work done on it during the compression is 3 J
I am going to say velocity because you have the same amount of acceleration going in a certain direction.
Power = (voltage) x (current) =
(120 V) x (8 A) = <em>960 watts</em>
