Homework to be turned in on Tuesday (A block) and Wednesday (E block)

Note - this is due on Tuesday for A block, and Wednesday for E block (who already have a different assignment due for Monday).

Write your answers on a separate sheet of paper TO BE TURNED IN.

Please write your work and answers on a sheet of paper that you can turn in.  Thanks!

1.  What is the wavelength of a 120 pm x-ray?  (pm means 10^-12 m and x-rays travel at the speed of light)

2.  Draw the approximate shape of a graph of period vs. length for a pendulum.

3.  The equation we've seen in class is the period of a "simple" pendulum.  What do you suppose makes our pendulums "simple"?

4.  Calculate the period of a 5-m long pendulum.

5.  If the pendulum in #4 above were taken to Mars, where the gravity is roughly 40% Earth's gravity,  would be the new period?

6.  Consider a 261.6 Hz sound wave (this is approximately the note 'middle C').  Assume that the speed of sound at sea level is 340 m/s.
a.  What is the wavelength of this sound wave? 
b.  Do you think the wavelength of this sound wave would be different on the Moon?  How so?
c.  Would the wavelength be different at a higher altitude, maybe in Boulder, Colorado?  How so?