A Jet engine measures 120 dB at a distance of 100 ft. If two of these ermines ar

Question

A Jet engine measures 120 dB at a distance of 100 ft. If two of these ermines are on, the sound will measure 240 dB at 100 ft. true false As the amplitude of a sound wave increases, which of the following will also increase? decibels frequency velocity of the sound The "pitch" of a sound is most closely related to its: velocity amplitude frequency Which of the following most accurately describes what a car radio does ? converts radio waves sound waves convert sound waves to radio waves converts dB to dB (A)

Explanation / Answer

1. b) False because the intensity cannot be added

2. b) frequency. As when the Amplitude increases then the sound becomes more louder.

3. The pitch of a sound is more clearly related to its c) frequency.

4. A car radio converts a) Radio waves to sound waves

5. The frequency range for a normal human hearing is b) 20Hz- 20,000Hz.

6. 20 KHz is same as b)20,000Hz

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