3 years ago

Pls help!! science.

1 answer:

6 0

Answer:

Explanation:

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AleksandrR [38]

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$U = - P.E$

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so change in the potential energy is given by

$U_f - U_i = (-PEcos\theta_2)- (-PEcos\theta_1)$

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Pls help!! science. ​