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shepuryov [24]
2 years ago
5

A drum rotates around its central axis at an angular velocity of 19.4 rad/s. If the drum then slows at a constant rate of 8.57 r

ad/s2, (a) how much time does it take and (b) through what angle does it rotate in coming to rest
Physics
1 answer:
lys-0071 [83]2 years ago
4 0

Answer:

Explanation:

Using equations of motion:

(a)

v=u+at

∴0=19.4−8.57t

∴t=19.4/8.57

=2.3s

B. Using s= ut + 1/2 at²

19.4(2.3)-1/28.57(2.3)²

= 21.92rad

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ieces A and B must also have the same type of charges

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Answer:

Approximately 1.62 × 10⁻⁴ V.

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By Faraday's Law of Induction, the EMF \epsilon induced in a coil (one loop) is equal to the rate of change in the magnetic flux \Phi through the coil.

\displaystyle \epsilon(t) = \frac{d}{dt}(\Phi(t)).

Finding the average EMF in the coil is similar to finding the average velocity.

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