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alex41 [277]
3 years ago
10

Wht is the mass number of 19k/39

Physics
1 answer:
jeka57 [31]3 years ago
7 0

Answer:

????????

Explanation:

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4 0
3 years ago
A 3 kg penguin is pushed by his penguin friends who give him an initial speed vo at the top of a 30 m hill. The penguin is hopin
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Answer:

This question can be answered by using conversation of energy.

K_1 + U_1 = K_2 + U_2

\frac{1}{2}mv_{0}^2 + mgh_1 = 0 + mgh_2

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Explanation:

Note that we take K_2 = 0 because we are looking for the minimum initial speed for the penguin to reach the top of the second hill. Any other speed more than this will already be enough for him.

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The answer should be d because they are constantly rotating
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