Answer:
Explanation:
There is no change in mass. Therefore, mass = 70
k
g
Weight on Jupiter ≈ 1578 N
Answer:
Explanation:
(a) For the calculation of the Electric field we use

(b) The capacitance is calculate by using the expression

(c) Finally, the charge on each plate is

I hope this is useful for you
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Answer:
Explanation:
Given
mass of rod is M
Distance between rails is L
If the direction of magnetic field is directed upwards
If rod is moving right then,
Area enclosed is increasing therefore a Clockwise current will induce
and if rod is moving left then enclosed area is decreasing therefore an anticlockwise current will setup in the circuit
(b)Induced EMF will be

where v=velocity of rod
and current is 

(c)Force necessary to move rod with constant velocity v is




Answer:
P=6.25N and Q=16.25N
Explanation:
In order to solve this problem we must first draw a free body diagram for both situation, (see attached picture).
Now, we need to analyze the two free body diagrams. So let's analyze the first diagram. Since the body is accelerated, then the sum of forces is equal to mass times acceleration, so we get:

We can assume there will be only the two mentioned forces P and Q, so
the sum of forces will be:
P+Q=ma

P+Q=22.5N
We can do the same analysis for the second free body diagram:


Q-P=10.5N
so now we have a system of equations we can solve by elimination:
Q+P=22.5N
Q-P=10.5N
Now, we can add the two equations together so the P force is eliminated, so we get:
2Q=32.5N
now we can solve for Q:

so
Q=16.25N
Now we can use any of the equations to find P.
Q+P=22.5N
P=22.5N-Q
when substituting for Q we get:
P=22.5N-16.25N
so
P=6.25N
Answer: To convert this into dimes it's basically like 25 divided by 10.
25 / 10 = 2.5, So you'd need two dimes and a nickel.