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MrRissso [65]
3 years ago
13

Please help!!!!!!!!!

Physics
1 answer:
antiseptic1488 [7]3 years ago
4 0

Answer: 1 / 4.283 x 10¹¹

the earth model will be 64 cm away from the tennis ball

Explanation:

0.03 / 7 x 10⁸ = 1 / 4.283 x 10¹¹

(1.5 x 10¹⁰)( 1 / 4.283 x 10¹¹) = 0.64285

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A thin rod of length 0.75 m and mass 0.42 kg is suspended freely from one end. It is pulled to one side and then allowed to swin
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Answer:

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Explanation:

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h is the horizontal distance between the center of mass and the rotational axis of the rod

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I = (\frac{1}{12})(0.42 x 0.75^{2} ) + ( 0.42 x ([tex]\frac{0.75}{2})^{2}[/tex])

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   Ki + Ui = Kf + Uf

   at the maximum height velocity = 0 therefore final kinetic energy = 0

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where (H-h) = rise in the center of mass

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Answer:

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