help A wave In one medium encounters a new medium and enters it. Which of the fo

Question

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A wave In one medium encounters a new medium and enters it. Which of the following wave properties will be affected in this process? ( Select all that apply.) wavelength frequency speed Use the worked example above to help you solve this problem. A wave has a wavelength of 2.80 m. Calculate the frequency of the wave if it is each of the following types of waves. Take the speed of sound as 343 m/s and the speed of light as 3.00 x 105 m/s. a sound wave a light wave Find the wavelength of an electromagnetic wave with frequency 8 .6 GHz = 8.60 x 109 Hz (G = giga middot 109), which is in the microwave range. Find the speed of a sound wave in a n unknown fluid medium If a frequency of 533 Hz has a ..wavelength of 2.90 m.

Explanation / Answer

Frequency remains same where as wavelength and speed changes
a) lambda = 2.8 m
frequency = c/lambda = 343/2.8 = 122.5 Hz
b) frequency = c/lambda = 3x10^8/2.8 = 1.0714x10^8 Hz


a) f = 8.6x10^9

lambda = c/f = 3x10^8/8.6x10^9 = 0.03488 m

b) f=v/lambda

v = f*lambda = 533*2.9 = 1545.7 m/s

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