(adsbygoogle = window.adsbygoogle || []).push({}); 1.Two harmonic waves travelingin opposite directions interfere to produce a standing wave described by y=3sin(0.25pi x)cos(10pi t). What is the distance (in m) between the first two antinodes?

4

0.8

2

5

7

assumption 4?

Two harmonic waves are described by

y=4sin(3x-200t)

y=4sin(3x-200t-5)

What is the amplitude of the resultant wave?

4.3

4

8

6.4

5.7

assumption 6.4? as it is 2Acos(phase/2)....

Finally :s

A stretched string is observed to vibratein four equal segments when driven by a 480 Hz oscillator. What is the fundamental frequency of vibration for this string?

Select the correct answer.

370Hz

120 Hz

245 Hz

619 Hz

494 Hz

assumption 120Hz as f proportional to n

Just tell me if anything is wrong please.thanks in advance.

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# Homework Help: Superposing of two waves

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