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torisob [31]
3 years ago
9

A(n) __________ is an intentionally constructed, low-impedance electrically conductive path designed and intended to carry curre

nt under ground-fault conditions from the point of grounding on a wiring system to the electrical supply source and one that facilitates the operation of the overcurrent device or ground fault detectors on a high-impedance system.
Physics
1 answer:
professor190 [17]3 years ago
3 0

Answer:

effective ground-fault current path

Explanation:

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Answer:

The correct answer is option 'c': Smaller stone rebounds while as larger stone remains stationary.

Explanation:

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Equating initial and the final momenta we get

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Now since the surface is frictionless thus the energy is also conserved thus

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Equating initial and final energies we get

\frac{1}{2}mv^2=\frac{1}{2}mv'^2+\frac{1}{2}MV'^2\\\\mv^2=mv'^2+MV'^2\\\\m(v^2-v'^2)=MV'^2\\\\m(v-v')(v+v')=MV'^2......(ii)

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v+v'=V'

Using this in equation i we get

v'=\frac{v(m-M)}{(M-m)}=-v

Thus putting v = -v' in equation i  we get V' = 0

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