16.4 Energy and Power of a Wave

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Last updated 5:16 PM on 4/22/26
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10 Terms

1
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What do all waves carry?

Energy (and can do work).

2
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What affects the energy of a wave?

Amplitude and frequency.

3
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How does energy depend on amplitude?

Proportional to amplitude².

4
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How does energy depend on frequency?

Proportional to frequency².

5
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What does it mean conceptually for average power?

Power increases with: Bigger amplitude, Higher frequency, Faster wave speed.

6
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Units of intensity?

W/m².

7
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Why do waves get weaker with distance?

Energy spreads over a larger area.

8
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Does total energy change as wave spreads?

No (if no energy loss), but intensity decreases.

9
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What makes up wave energy?

Kinetic energy and Potential energy.

10
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Relationship between KE and PE in a wave?

They are equal on average.