psf2 104 ☈ Name:

RipStik swizzle sine wave 14 cm 1.40 seconds 70 cm

  1. A RipStik was swizzled ("wiggled") across a poster paper. The sinusoidal swizzle wave can be seen in the diagram. Keeyana
    1. _________ How many waves are there on the "paper" above?
    2. λ = _________ _________ What is the wavelength λ of one wave?
    3. a = _________ _________ What is the amplitude a?
    4. τ = _________ _________ What is the period τ of one wave?
    5. f = _________ _________ Calculate the RipStik swizzle wave frequency f.
    6. ѵwave = _________ _________ Use the wavelength λ and frequency f to calculate the velocity ѵwave of the RipStik swizzle wave.
  2. The videos on Monday covered three types of precipitation. List the three types of precipitation and write a definition for each type.

  3. On Tuesday Eiko released the weather balloon with an LMS6 radiosonde attached. List some of the physical properties of the atmosphere that the radiosonde measured.
  4. Define relative humidity.
  5. A student gathered the data seen in the table below.
    Graphical analysis

    Sound speed data

    Time (s)Distance (m)
    0.0000
    0.6205.2
    0.9307.8
    1.2410.4
    1.5513
    background rectangle major grid lines axes text layers Speed of Sound Time (s) Distance (m) x-axis labels 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 y-axis labels 0 50 100 150 200 250 300 350 400 450 500 520 540
    1. Plot the data on the graph.
    2. __________ __________ Calculate the experimental speed of sound based on the data. Include the units with your answer.
    3. __________The published value is 349 m/s. Calculate the percentage error for this data.
    4. __________ __________ Based on the experimental data, how long for a sound to travel 615.6 meters?
  6. Primary and secondary colors
    1. List the primary colors of light:
    2. List the secondary colors of light:
  7. In the RGB color number system what do the letters RGB stand for?
  8. HSL colors:
  9. What is the name of the computer color system that uses color words such as red, crimson, cyan, antiquewhite, saddlebrown?

period τ = 1 ÷ (frequency f )
velocity ѵ = wavelength λ * frequency f
percent error= (experimental value−expected value) (expected value)