which statement best explains the relationship between electric force and the charges on two interacting objects? a. electrical
2 answers:
Answer:
a. electrical force is directly proportional to the product of the charges on the two objects
Explanation:
Electrical forces is given by the equation:
where
k is the Coulomb's constant
q1 and q2 are the charges on the two objects
r is the separation between the two objects
As we can see from the formula, F (the electrical forces) is directly proportional to the product between the two charges (q1 and q2), so the correct answer is
a. electrical force is directly proportional to the product of the charges on the two objects
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Answer:
B = 0.37T
Explanation:
In order to calculate the needed magnitude of the magnetic force you use the following formula, which calculate the induced emf of the solenoid when there is a change in the magnetic flux:
(1)
emf: induced voltage in the solenoid = 10,000V
N: turns of the solenoid = 525
ФB: magnetic flux
B: magnitude of the magnetic field = ?
A: cross-sectional area of the solenoid = π*r^2
r: radius of the cross-sectional area = 0.260m
Δt: interval time of the change of the magnetic flux = 4.17ms = 4.17*10^-3s
First, you have the magnetic field direction perpendicular to the plane of the solenoid, after, the angle between them is 90° (quarter of a revolution)
In the equation (1) the only parameter that changes on time is the angle, then, you can solve for B from the equation (1):
Finally, you replace the values of the parameters to calculate B:
The strength of the magnetic field is 0.37T