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r-ruslan [8.4K]
3 years ago
7

Help me with this! I do not understand it! I will give brainliest! Is it A B C or D

Physics
2 answers:
Firdavs [7]3 years ago
3 0

The answer is C. Click C.

MaRussiya [10]3 years ago
3 0

D)

This is because one square is completely black, and the circle is half black, therefore, the produced circle cannot be completely white.

Instead, it'd be half white OR completely black

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A certain string just breaks when it is under400N of tension.
OLEGan [10]

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The string will break with a speed of 20 m/s.

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It is given that,

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Radius of the circle, r = 10 m

We need to find the speed at which the string will break. The boy continuously increases the speed of the  stone. The tension acting on the stone is equal to the centripetal force. It is a force that acts towards the center of circle. It is given by :

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So, the string will break with a speed of 20 m/s. Hence, this is the required solution.

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