1. The force between a pair of charges is 100 newtons. The distance between the charges is 0.01 meter. If one of the charges is 2 u 10-10 C, what is the strength of the other charge?2. The force between two charges is 2 newtons. The distance between the charges is 2 u 10-4 m. If one of the charges is 3 u 10-6 C, what is the strength of the other charge?
Answers
Answer:
1.
2.
Explanation:
1. Electrostatic force is given as:
where k = Coulombs constant
q = charge of first charge
Q = charge of the second charge
r = distance between them
From the question:
F = 100 N
q =
r = 0.01 m
We need to find Q.
From the formula of force, we have that Q is:
This is the charge, Q, of the second charge.
2. From the question:
F = 2 N
q =
r =
We need to find Q.
Using the same formula for Q as in 1. above, we have that:
This is the charge, Q, of the second charge.
Answer:
(1)
(2)
Explanation:
Force Between two charges is give by.
, here k is called coulomb constant and has value =
.
(1) case, F =100N, r = 0.1m and =
substituting these values in above equation and solving for unknown gives us.
.
(2) Case, F = 2N, r = and
.
again by substituting these in above equation and solving for unknown gives us.
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The phrase "by ordinary means" was added The phrase "by ordinary means" was added.
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air resistance
fluid friction
sliding friction
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"Speed" is the rate at which distance is being covered .... the ratio
of distance covered to the time it takes.
"Velocity" is the rate at which distance is being covered .... the ratio
of distance covered to the time it takes ... AND the direction in which
it is covered. 'Speed' with the direction of the motion.
a. winds spinning off the equator
b. the rotation of Earth on its axis
c. the different air movements north and south of the equator
d. the friction that slows down winds near Earth’s surface
Answers
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B. the rotation of Earth on its axis
Explanation;
- The Coriolis effect describes how the Earth's rotation steers winds and surface ocean currents. The Coriolis effect causes the motion of a freely moving object to appear as a curve.
- Therefore, since air and water move freely, the Coriolis effect makes their movement to be curved. This is why the movement of winds and oceans does not follow a straight line but it is bent and curved.
The answer is B