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C2 Sound
from Physics Workbook for CSEC
by Collins
1 a) Describe a simple experiment to measure the speed of sound in air.
b) A loudspeaker produces a sound with frequency 250 Hz. Assuming the speed of sound is 340 ms−1, determine the wavelength of the sound waves.
c) A tropical storm approaches Jamaica. Ingrid measures the time between seeing a flash of lightning and hearing the sound of thunder. She estimates it to be 9 seconds. Calculate the distance between the tropical storm and Ingrid.
2 a) Sound is a longitudinal wave. What does this mean?
b) The pitch and loudness of a sound is related to certain wave parameters. State what EACH one is related to.
c) State THREE differences between sound waves and light waves.
d) State the range of frequencies that can be detected by a young adult’s ear.
a) Saleema has a radio playing in her living room. The room has one door of width 0·9 m. She is cooking in her kitchen. Explain why she is able to hear the sound of the radio in the kitchen even though she cannot see the radio.
b) A signal generator is connected to two loudspeakers in a physics laboratory as shown below. Riaz, a Form Four student, starts at point P and walks along the line AB.
Signal generator
