Select your language

Suggested languages for you:
Log In Start studying!
Answers without the blur. Sign up and see all textbooks for free! Illustration

Q.20

Expert-verified
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 451

Answers without the blur.

Just sign up for free and you're in.

Illustration

Short Answer

  1. An FM radio station broadcasts at a frequency of 101.3 MHz . What is the wavelength?
  2. What is the frequency of a sound source that produces the same wavelength in 200C air?

Part (a) The wavelength of the FM radio wave is 2.96 m.

Part (b) The frequency of a sound source that produces the same wavelength in 200 C is 115.8 Hz.

See the step by step solution

Step by Step Solution

Part (a) Step 1. Given information

The frequency of the FM radio signal is

The speed of any electromagnetic wave is

The speed of sound in 200C air is

Part (a) Step 2. Calculating the wavelength of the radio FM signal:

Wavelength is defined as the distance between consecutive crests or troughs.

The formula to calculate the wavelength in terms of wave speed is given by

Substitute for c and for f into the above formula to calculate the wavelength.

Part (b) Step 1. Calculate the frequency of the sound source:

Frequency is defined as the number of complete waves or oscillations travelling in unit time.

The formula to calculate the frequency in a periodic wave is given as:

Substitute 343 m/s for v, 2.96 m for into the above formula to calculate the frequency.

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.