HS LAB on Standing Waves

Click PRESET WAVES and TWO FIXED ENDS.

The simplest standing wave that is formed is the FIRST HARMONIC. What is the frequency of this wave in Hertz? No need to write the unit.

Use the same settings: PRESET WAVES and TWO FIXED ENDS.

Click NEXT HARMONIC and observe how the waves change. Match the following with the correct harmonic.

• Third Harmonic

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• Second Harmonic

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• Fifth Harmonic

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• Fourth Harmonic

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Settings: Preset waves, two fixed ends

Which observation is correct? Select all that apply.

• As the harmonic increases, the number of nodes and antinodes increases.

• As the harmonic increases, the amplitude of the standing wave increases.

• The number of harmonic corresponds to the number of nodes.

• The number of harmonic corresponds to the number of antinodes.

Settings: Preset waves, two fixed ends

Complete the table with the correct frequency for each harmonic.

g

f

e

d

0.267

0.134

0.402

0.067

0.201

0.469

0.334

Settings: Preset waves, two fixed ends

Which observation about frequencies and harmonics is correct? Select all that apply.

• As the harmonic increases, the frequency increases.

• As the harmonic increases, the frequency decreases.

Settings: Preset waves, two fixed ends

Which of the following diagrams is a harmonic of a standing wave with two fixed ends?

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Settings: Preset waves, ONE OPEN END

Which is the correct diagram of the first harmonic of a standing wave with one open end?

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Settings: Preset waves, ONE OPEN END

Which observation is correct? Select all that apply.

• As the harmonic increases, the number of nodes and antinodes increases.

• As the harmonic increases, the amplitude of the standing wave increases.

• The number of harmonic corresponds to the number of nodes.

• The number of harmonic corresponds to the number of antinodes.

Settings: Preset waves, ONE OPEN END

Complete the table with the correct frequency for each harmonic.

g

f

e

d

0.434

0.167

0.034

0.367

0.101

0.300

0.234

Settings: Preset waves, ONE OPEN END

If the first harmonic of a standing wave with one open end is 𝑓₁ and the third harmonic is 𝑓₃, which relationship is correct between the two frequencies?

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