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1. The musical note A above middle C has a frequency of 440 Hz. If the speed of sound is known to be 350 m/s, what is the wavelength of this note? 2. A certain FM radio station broadcasts electromagnetic waves at a frequency of 9.05×107 Hz. These radio waves travel at a speed of 3.00×108 m/s. What is the wavelength of these radio waves? 3.
Problems for you to try: Complete the following practice problems. You MUST show ALL the work outlined in the steps in the example problems. A wave with a frequency of 14 Hz has a wavelength of 3 meters.
wavelength ranges, called UVA, UVB and UVC. A manufacturer carries out some tests on experimental sunscreens P, Q and R to determine how effective they are at absorbing UV radiation.
Wavelength, Period & Frequency 1. Calculate the wavelength of a wave if 5 complete waves occupy a length of 20 m. 2. Calculate the wavelength of a wave if 15 complete waves occupy a length of 90 m. 3. Calculate the wavelength of a wave if 5 complete waves occupy a length of 2 m. 4.
Formulas and Constants: f = c/λ E = hf. f = frequency. c = speed of light (3.0 x 108 m/s) λ = wavelength. E = energy h = Planck’s constant (6.6262 x 10-34 J•s) 1. Calculate the λ given the frequency of radiation is 5.10 x 1014 hz. 2. Calculate the frequency of red light with λ = 6.50 x 10-7m.
1. Violet light has a wavelength of 4.10 x 10-12 m. What is the frequency? 7.31 × 1019 Hz. 2. Green light has a frequency of 6.01 x 1014 Hz. What is the wavelength? 4.99 × 10-7 m. 3. What is the wavelength (in meters) of the electromagnetic carrier wave transmitted by The Sports Fan radio station at a frequency of 640 Hz? 4.7 × 105 m. 4.
4.The question above describes the photoelectric effect. Use the space below to draw a picture illustrating this effect. Describe this figure and explain how frequency and work function (Φ) relate to the kinetic energy of the emitted electron. 1 photon ! 1 !! ejected if ℎ!≥Φ. Nothing happens if ℎ!<Φ. If ℎ!>Φ, the kinetic