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ICP. 4/4/13 Frequency wavelength examples Bill Nye Waves. Warmup. Use your notes from yesterday to answer the following questions: What is the name for a disturbance in matter that carries energy from one place to another?
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ICP 4/4/13 Frequency wavelength examples Bill Nye Waves
Warmup Use your notes from yesterday to answer the following questions: • What is the name for a disturbance in matter that carries energy from one place to another? • The __________ of a transverse wave is the maximum distance from the rest position to a crest or trough. • What is the formula for wave speed?
Agenda • Finish example wave speed problems. • Bill Nye Video • Page 523 (7-9) (Finish for homework)
P523 (7-9) • A wave along a guitar string has a frequency of 440 Hz and a wavelength of 1.5m. What is the speed of the wave? • The speed of sound in air is about 340 m/s. What is the wavelength of sound waves produced by a guitar string vibrating at 440 Hz? • The speed of light is 3 x 108 m/s. What is the frequency of microwaves with a wavelength of 1 cm?
P523 (7-9) • (440 Hz) x (1.5 m) = 660 m/s • (340 m/s) / (440 Hz) = 0.77 m • (3 x 108 m/s) / (0.01 m) = 3 x 1010 Hz