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Alecsey [184]
2 years ago
12

A phonograph record 0.15 m in its radius rotates 18 times per 90 seconds what is the frequency?

Physics
1 answer:
ioda2 years ago
6 0

Answer:

The frequency of the phonograph record is 0.2 Hz

Explanation:

The frequency of an object moving in uniform circular motion is the number of completed cycles the object makes in a specified time period

The given parameters of the phonograph record are;

The radius of the record = 0.15 m

The number of times the phonograph record rotates, n = 18 times

The time it takes the phonograph record to rotate the 18 times, t = 90 seconds

The frequency of the phonograph record, f = (The number of times the phonograph record rotates) ÷ (The time it takes the phonograph record to rotate the 18 times)

∴ The frequency of the phonograph record, f = n/t = 18/(90 s) = 0.2 Hz

The frequency of the phonograph record = 0.2 Hz.

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As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road i
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A flywheel with radius of 0.400 mm starts from rest and accelerates with a constant angular acceleration of 0.600 rad/s2rad/s2.
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Explanation:

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5 0
2 years ago
Which force attracts all matter to each other
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Gravity is the force that attracts all matter to each other.

Explanation:

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Gravitational force is given as:

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r is the distance between the two objects.

The gravity is what makes an apple fall on the ground and gravity is the force that keeps us on the ground.

Keywords: gravity, Newton, Force, weight

Learn more about gravitational force from brainly.com/question/14321566

#learnwithBrainly

8 0
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bazaltina [42]

Answer:

1 and 3

Explanation:

<u>1 and 3  </u>

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Adding an iron core will definitely increase the strength of the electromagnet

7 0
1 year ago
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