Nat Sci - Ll2 Last Assignment

Answer the following.
I. Show your solutions.
1. What is the frequency, in hertz, that corresponds to each of the following periods? (a) 0.10 s (b) 5 s.
2. What is the period, in seconds, that corresponds to each of the following frequencies? (a) 10Hz, (b) 0.2 Hz.
3. (a) What is the wavelength of a 340-Hz tone in air? (b) What is the wavelength of a 34,000-Hz ultrasonic wave in air?
4. While playing a game in a golf course, a friend of yours is 408 m away from you. You shout at her saying her name “Jayne!” How long will it take before she hears her name?
II. In your own words, concisely discuss the following.
1. If the Moon blew up, why would we not hear it? (Hint: Sound wave needs medium so that it can travel.)
2. What happens to the wavelength of sound as the frequency increases?