HELP ASAP am being timed will brain crown mark!

Physics

1 answer:

Nana76 [90]4 years ago

3 0

Answer:

The answer is D.

Explanation:

This is because mass always remains constant and weight is dependent on a gravitational pull.

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<u>Explanation:</u>

As per Doppler effect, the observer will feel a decrease in the frequency of the receiving signal if the source is moving away from the observer. So the shifted frequency is obtained using the below equation:

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