psc3 094 19 October 2012 ☈ Name:

1. Number one cloud name:
2. Number two cloud name:
3. Number three cloud name:
4. A RipStik was swizzled ("wiggled") across a poster pad paper. The sinusoidal swizzle wave can be seen in the diagram below.
   
   
   λ = _________ _________ Determine the wavelength λ of one wave of the RipStik swizzle wave.
5. a = _________ _________ Determine the amplitude a of the RipStik swizzle wave.
6. τ = _________ _________ The RipStik took a duration of 0.60 seconds to travel the 60 centimeters seen on the diagram above. Determine the period τ for the RipStik swizzle wave.
7. f = _________ _________ Calculate the RipStik swizzle wave frequency f.
8. ѵ_wave = _________ _________ Use the wavelength λ and frequency f to calculate the velocity ѵ_wave of the RipStik swizzle wave.
9. _________ How many wavelengths in all are there on the "paper" above?
10. τ = _________ _________ A ball bounces 20 times in 5 seconds. What is the period of the bouncing ball?
11. f = _________ _________ A ball bounces 20 times in 5 seconds. What is the frequency for the bouncing ball?
12. τ = ________ _________ While gathering data for laboratory nine, a clapper clapping in synch with the echo claps 20 times in ten seconds. Based on this data, what is the period for the echo (the out-and-back time)?
13. velocity ѵ = _________ _________ During ten seconds a clapper claps 20 times. The echo flight distance is measured as being 175 meters. Based on this data, what is the speed of sound?

period τ = 1 ÷ (frequency f ) || velocity ѵ = wavelength λ * frequency f