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bagirrra123 [75]
2 years ago
5

The diagram does not represent a real electric field because the field lines __

Physics
1 answer:
AfilCa [17]2 years ago
6 0
Answer is B since electric field lines flow from negative to positive not from positive to positive.
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I attached the missing picture.
The force of seat acting on the child is a reaction the force of child pressing down on the seat. This is the third Newton's law. The force of a child pressing down the seat and the force of the seat pushing up on the child are the same.
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Part A
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F_a=F_cf-F_g
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F_a=m\frac{v^2}{r}-mg=179 $N
Part B
At the point, B situation is a bit more complicated. In this case force of gravity and centrifugal force are not aligned. We have to look at y components of this forces, y-axis, in this case, is just pointing upward.
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Part C
The child will stay in place at point A when centrifugal force and force of gravity are in balance:
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6 0
3 years ago
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