choose the correct answer, please!! [1] If you wanted to make the wavelength twi

Question

choose the correct answer, please!!

[1] If you wanted to make the wavelength twice as long by changing only the mass hanging on the end of the string, what would you do?

(a) put on a total of one half times the original mass

(b) put on a total of four times the original mass

(c) put on a total of one fourth times the original mass

(d) put on a total of two times the original mass

[2] Suppose that you set up a standing wave pattern on a string that was about 1.0m long ( this is measured from the oscillator to the pulley ). Now you are to change nothing except that the string is to be about 2.0m long. There is still a good standing wave pattern on the string. How has the wavelength changed?

(a) It is longer. (b) It is shorter. (c) It has not changed.

[3] Is it possible to have a standing wave pattern on the longer string if the number of nodes between the oscillator and the pulley had been even for the shorter string?  

(a) No (b) Yes

Explanation / Answer

[1]   (b) put on a total of four times the original mass

[2]   (c) It has not changed

[3]    (b) Yes

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