Ch 12 CQ - Question 1 You hear an ambulance with a certain loudness and you are about 100 yards away Another person hears the same ambulance with an

# Ch 12 CQ - Question 1 You hear an ambulance with a certain...

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Question 1 You hear an ambulance with a certain loudness and you are about 100 yards away. Another person hears the same ambulance with an intensity that is about 10 times softer . Roughly, how far is the other person from the ambulance? A) about the same distance B) about 300 yards C) about 1000 yards D) about 3000 yards E) about 10000 yards
Question 2 A CD playing softly has an intensity level of about 40 dB . Light street traffic has a level of about 70 dB . How much greater is the intensity of the street traffic compared to the background music? A) about the same B) about 10 times C) about 100 times D) about 1,000 times
Question 3 You are playing your stereo at a sound level of 90 dB. Your roommate turns on her stereo at a sound level of 90 dB. The new sound level is A) 87 dB B) 90 dB C) 93 dB D) 180 dB
Question 4 How many more stereos must be turned on to increase the sound level to 96 dB ? A) 1 B) 2 C) 3 D) 4
Question 5 You have an empty 2-liter soda bottle and an empty 12-oz soda bottle . Which one has the higher frequency when you blow across the top? A) the 2-liter bottle B) the 12-oz bottle C) both have the same frequency D) depends on how hard you blow
Question 6 You blow into an open pipe and produce a tone.

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• Winter '08
• REHSE
• Physics, Eduardo

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