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Akimi4 [234]
3 years ago
9

Please, please, please help me!!!!!!

Physics
1 answer:
grin007 [14]3 years ago
6 0
The force exerted by the 25 Kg mass on the 42 Kg mass is equal to the force that the 42 Kg mass exerts on the 25 Kg mass, and that force is inversely proportional to the square of the distances between their centers of mass.

In short, Your Answer would be Option C

Hope this helps!
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A tube with a cap on one end, but open at the other end, has a fundamental frequency of 130.8 Hz. The speed of sound is 343 m/s
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Answer:

Y = V / f      where Y equals wavelength

4 Y1 = V / f1       for a closed pipe the wavelength is 1/4 the length of the pipe

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Y1 / Y2 = 2 = f2 / f1      dividing equations

f2 = 2 f1  

the new fundamental frequency is 2 * 130.8 = 261.6

(The new wavelength is 1/2 the original wavelength so the frequency must double to produce the same speed.

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A 60-kg rollerblader rolls 10 m down a 30? incline. When she reaches the level floor at the bottom, she applies the brakes. The
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Answer:

s = 20 m

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given,

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