# Essay on Vibrating String and Long String Vibrates

601 Words Oct 9th, 2013 3 Pages
Physics 7C

Physics 7C

FNT 06

FNT’s

due: DLM 07

D

0) If you did not finish Activity 8.5.2, complete it as part of your FNT’s.
1. If you did not ﬁnish Activity 8.5.2, complete it as part of your FNT’s.
1)
(Solidification)
2. (Solidiﬁcation) A 2m long string vibrates in the 3rd harmonic (n=3) with an amplitude of
A 2 m long string vibrates in the 3rd harmonic (n=3) with an amplitude of 2 cm at a frequenc
2cm at a frequency of 50Hz.
Hz.
a. Sketch the standing wave on the picture below.
a) Sketch the standing wave on the picture below.

b. Determine the speed of the wave. Brieﬂythe wave. Briefly justify your answer
c) Is there if the frequency is changed to 25 Hz? If
parts. The the string away from the vibrating source is stationary. The part ofstring connected to the vibrating source still vibrates at the same standing
The part of the the string connected to the vibrating source still vibrates at the same standing wave frequency. Determine the longest possible wavelength (in m) waves that the frequency. Determine the longest possible wavelength (in m) of the string of the string waves that the source could have been producing before your work and explain your rea could have been producing before it was pinched. Show it was pinched.
Show your workAs the soundyour reasoning. string goes out into the air, which parameter(s) of the sou
b) and explain that the vibrating in the vibrating same goes out into the air, vibrating wave on of the
b. As the sound that air will be the string as the parameters of thewhich parameter(s)the string and which w different. Explain. sound wave in air will be the same as the parameters of the vibrating wave on the string and which will be different. Explain.
4)
(Reflect) Critically evaluate your answer for 8.5-2&3) clarity and completeness. Are you big ideas we have developed in

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