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den301095 [7]
2 years ago
5

There are two types of magnets some of them are _______ and some are _________

Physics
2 answers:
kogti [31]2 years ago
8 0

Answer:

There are many types of magnets, which are generally divided into two categories: permanent magnet and a soft magnet.

Explanation:

tensa zangetsu [6.8K]2 years ago
7 0
There are temporary magnets and permanent magnets. these are categorized by their source of magnetism
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A 60 cm diameter wheel accelerates from rest at a rate of 7 rad/s2. After the wheel has undergone 14 rotations, what is the radi
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Answer:

a=368.97\ m/s^2

Explanation:

Given that,

Initial angular velocity, \omega=0

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Let t is the time. Using second equation of kinematics can be calculated using time.

\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\\t=\sqrt{\dfrac{2\theta}{\alpha }} \\\\t=\sqrt{\dfrac{2\times 87.96}{7}} \\\\t=5.01\ s

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\omega_f=\omega_i+\alpha t\\\\\omega_f=0+7\times 5.01\\\\\omega_f=35.07\ rad/s

Radial component of acceleration,

a=\omega_f^2r\\\\a=(35.07)^2\times 0.3\\\\a=368.97\ m/s^2

So, the required acceleration on the edge of the wheel is 368.97\ m/s^2.

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ANSWER:

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