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2 years ago

Which of these statements articulate one of Kirchhoff's laws? (Select all that apply)

Physics

1 answer:

aleksley [76]2 years ago

8 0

Answer: E) and F)

Explanation:

E) In any closed loop, the sum of all voltage drops must be zero, as it is stated in the Kirchhoff Voltage Law (KVL).

This is a direct consequence of the energy conservation principle, as if it could be possible to return to the starting point in a loop with a different voltage, this energy could be used as a infinite energy source, which is against laws of nature, specially Thermodynamic's 2nd law.

F) At any junction, the sum of the currents into it, must be equal to the sum of the currents that leave the junction, as it is stated in the Kirchhoff"s Current Law (KCL).

This is a direct consequence of the charge conservation principle, as the charge can't neither be accumulated nor be destroyed at any point.

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Verizon [17]

I believe destructive interference

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2 years ago

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Naddik [55]

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10 months ago

In a game of pool, a cue ball rolls without slipping toward the stationary eight ball with a momentum of 0.23 kg. After the two

IrinaVladis [17]

This question involves the concepts of the law of conservation of momentum.

The magnitude of the final momentum of the eight ball is "0.22 N.s".

According to the law of conservation of momentum:

$P_{i1}+P_{i2}=P_{f1}+P_{f2}$

where,

$P_{i1}$ = initial momentum of the cue ball = 0.23 N.s

$P_{i2}$ = initial momentum of the eight ball = 0 N.s (since ball is initially at rest)

$P_{f1}$ = final momentum of the cue ball = 0.01 N.s

$P_{f2}$ = final momentum of the eight ball = ?

Therefore,

$0.23\ N.s + 0\N.s = 0.01\ N.s+P_{f2}\\\\P_{f2} = 0.22\ N.s$

Learn more about the law of conservation of momentum here:

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2 years ago

How much is a city of a body when it covers 600m in 5 min?

Fofino [41]

Answer:

2m/s

Explanation:

5min × 60sec

=300

now,

600÷300

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2 years ago

For the following questions, imagine the book drops in free fall and falls a distance d. For the system of the book and earth, t

alukav5142 [94]

Answer:

C) is zero

Explanation:

According to the law of energy conservation, the total mechanical energy of the object is conserved. A book falling a distance d would have a change in potential energy, resulting in the same change in kinetic energy. But the total mechanical energy must be the same. So there's 0 change in total energy of the system.

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2 years ago