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3 years ago

14

a conducting rod moves perpendicularly through a uniform magnetic field. how does the emf change if both the velocity of the rod

and the length of the rod are doubled?

1 answer:

Gre4nikov [31]3 years ago

6 0

Answer:

It increases by a factor of 4. (emf=Blv)

Explanation:

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Answer:

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4 years ago

A loudspeaker having a diaphragm that vibrates at 910 Hz is traveling at 75.0 m/s directly toward a pair of holes in a very larg

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To solve this problem we need to apply doppler equation,

Our values are:

$f_0 = 910Hz\\c = 75m\\v=344m/s\\\theta= 12.9\°\\$

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Substituting,

$f= \frac{344}{344-75}*910$

$f = 1163Hz$

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$\lambda = 0.2956$

We can now find the distance by,

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