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Romashka-Z-Leto [24]
2 years ago
15

Help me please (*˘︶˘*).。*♡​

Physics
2 answers:
lisov135 [29]2 years ago
7 0

Answer:

<h3>The angle of contact does not depend upon</h3><h2><em>The inclination of surface in contact</em>.</h2>

Explanation:

Except The inclination of surface in contact, the angle of contact depends upon the temperature, soluble impurity and on cohesive force...

ss7ja [257]2 years ago
5 0

Answer:

your answer is number 4

Explanation:

Hope it helps :)

pls mark brainliets :P

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A merry-go-round is shaped like a uniform disk and has moment of inertia of 50,000 kg m 2 . It is rotating so that it has an ang
lapo4ka [179]

Answer:

r = 20 m

Explanation:

The formula for the angular momentum of a rotating body is given as:

L = mvr

where,

L = Angular Momentum = 10000 kgm²/s

m = mass

v = speed = 2 m/s

r = radius of merry-go-round

Therefore,

10000 kg.m²/s = mr(2 m/s)

m r = (10000 kg.m²/s)/(2 m/s)

m r = 5000 kg.m   ------------- equation 1

Now, the moment of inertia of a solid uniform disc about its axis through its center is given as:

I = (1/2) m r²

where,

I = moment of inertia = 50000 kg.m²

Therefore,

50000 kg.m² = (1/2)(m r)(r)

using equation 1, we get:

50000 kg.m² = (1/2)(5000 kg.m)(r)

(50000 kg.m²)/(2500 kg.m) = r

<u>r = 20 m</u>

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Answer:

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Answer:

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