When a guitar is tuned to adjust it pitch, what is it that is ...

[roselinechinyere27m]

When a guitar is tuned to adjust it pitch, what is it that is changed?
 
  A) The wavelength of the fundamental.
  B) The amplitude of the fundamental.
  C) The frequency of the fundamental.

Question 2

Suppose that Earth suddenly collapsed to one-fourth of its present radius. Compared to your present weight, your weight would then be
 
  A) 4 times larger.
  B) 8 times larger.
  C) unchanged.
  D) 16 times larger.
  E) 16 times smaller.

[hanadaa]

Answer to Question 1

C

Answer to Question 2

D

[roselinechinyere27m]

Wow, this really help

[kalskdjl1212]

Thanks for the timely response, appreciate it