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erma4kov [3.2K]
3 years ago
7

If you take a bar magnet with both n & s poles and cut it in half, you get

Physics
1 answer:
creativ13 [48]3 years ago
7 0
I think you get half of the magnetic field and that means half the power of the magnetic field.
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Hi can you please help me, im really stuck
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I have the answer for A. Since there is blockage in the ear canal, some sound waves may not be able to get through or travel as quickly so you would have trouble hearing
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A runner of mass 56.0kg runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its cent
SCORPION-xisa [38]

Answer: -0.84 rad/sec (clockwise)

Explanation:

Assuming no external torques act on the system (man + turntable), total angular momentum must be conserved:

L1 = L2

L1 = It ω + mm. v . r = 81.0 kg . m2 .21 rad/s – 56.0 kg. 3.1m/s . 3.1 m  

L1 = -521.15 kg.m2/sec (1)

(Considering to the man as a particle that is moving opposite to the rotation of  the turntable, so the sign is negative).

Once at rest, the runner is only a point mass with a given rotational inertia respect from the axis of rotation, that can be expressed as follows:

Im = m. r2 = 56.0 kg. (3.1m)2 = 538.16 kg.m2

The total angular momentum, once the runner has come to an stop, can be written as follows:

L2= (It + Im) ωf = -521.15 kg.m2/sec  

L2= (81.0 kg.m2 + 538.16 kg.m2) ωf = -521.15 kg.m2/sec  

Solving for ωf, we get:

ωf = -0.84 rad/sec  (clockwise)

5 0
3 years ago
What will most likely happen with bar magnets aligned NS NS
likoan [24]

Answer:

repel

Explanation:

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An 5kg object is 6 meters up hill. Find potential energy
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Potential Energy = mass * 9.81 * height
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PE = 6 * 9.81 * 6 = 353.16 J
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3 years ago
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