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Amiraneli [1.4K]
3 years ago
5

Question 14 (2 points)

Physics
1 answer:
sveticcg [70]3 years ago
7 0

Answer:

after 2 seconds its velocity is -20 m/s. after 3 seconds its velocity is -30 m/s. after 10 seconds its velocity is -100 m/s.

Explanation:

This is my answer.

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If the mass of a wheel is increased by a factor of 7 and the radius is increased by a factor of 15, by what factor is the moment
inn [45]

Answer:

The moment of inertia will be increased by a factor of 1575

Explanation:

Let the moment of inertia of a wheel be given as;

I = \frac{1}{2} mr^2\\\\

where;

I is the moment of inertia of the wheel

m is mass of the wheel

r is radius of the wheel

when the mass is increased by a factor of 7 and the radius is increased by a factor of 15

I_1 = \frac{1}{2}mr^2\\ \\I_2 = \frac{1}{2}(7m)(15r)^2\\\\I_2 =  \frac{1}{2}(7m)(225r^2)\\\\I_2 = 7\times 225[\frac{1}{2}(mr^2)]\\\\I_2 = 1575[\frac{1}{2}(mr^2)]\\\\Recall, \frac{1}{2}(mr^2) = I_1 \\\\I_2 = 1575 I_1

Thus, the moment of inertia will be increased by a factor of 1575

3 0
3 years ago
How many poles in a rolo?
Yakvenalex [24]

Answer: 7

Explanation:

How many pieces are in a ROLO tube?

each classic roll of ROLO….has seven individually wrapped pieces. Tuck it in your lunchbox, bag or desk drawer and get your roll on.

3 0
3 years ago
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Xelga [282]

Answer:

Transverse wave

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A unit for measuring frequency is? ohm watt ampere hertz
pishuonlain [190]

"Frequency" is a measure of how frequent something is.

Its unit is the "Hertz".

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All of the following are examples of electric current except _____?
Jlenok [28]

Hi there


The answer for that question is : C

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I hope that's help... please rate down here ↓↓


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