PHYS1C_W07_EX2

PHYS1C_W07_EX2 - Name: _ Date: _ 1. The sound level of a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Page 1 Name: __________________________ Date: _____________ 1. The sound level of a dog's bark is 50 dB. The intensity of a rock concert is 10,000 times that of the dog's bark. What is the sound level of the rock concert? A) 10,050 dB B) 500,000 dB C) 90 dB D) 2000 dB E) 54 dB 2. A train traveling at 90 km/h is blowing its whistle at 440 Hz as it crosses a level crossing. You are waiting at the crossing and hear the pitch of the whistle change as the train passes you. The sound you hear changes from a frequency of _____ to a frequency of _____. (Take the speed of sound to be 340 m/s.) A) 475 Hz; 410 Hz B) 410 Hz; 475 Hz C) 408 Hz; 472 Hz D) 472 Hz; 408 Hz E) 598 Hz; 348 Hz 3. Two identical loudspeakers face each other at a distance of 180 cm apart, along the horizontal x-axis and are driven by a common oscillator at 680 Hz. Assume x = 0 to coincide with the midpoint of the line joining the two speakers. Which of the following is/are possible point/s of maximum sound intensity? A) 25 cm
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

PHYS1C_W07_EX2 - Name: _ Date: _ 1. The sound level of a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online