{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Homework Ch 20 Wave

# Homework Ch 20 Wave - Homework Ch 20 Wave Problem 20.35 A...

This preview shows pages 1–4. Sign up to view the full content.

Homework Ch 20 Wave Problem 20.35 A loudspeaker on a tall pole broadcasts sound waves equally in all directions. Part A If the sound output is 7.0 , at what distance from the loudspeaker is the sound intensity level 86 ? Express your answer using two significant figures. ANSWER: = 40 Problem 20.77 You have just been pulled over for running a red light, and the police officer has informed you that the fine will be \$250. In desperation, you suddenly recall an idea that your physics professor recently discussed in class. In your calmest voice, you tell the officer that the laws of physics prevented you from knowing that the light was red. In fact, as you drove toward it, the light was Doppler shifted to where it appeared green to you. "OK," says the officer, "Then I'll ticket you for speeding. The fine is \$1 for every 1 over the posted speed limit of 50 . Part A How big is your fine? Use 650 as the wavelength of red light and 540 as the wavelength of green light. ANSWER: \$2,000,000 \$200,000 \$200 \$200,000,00 0 1

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

View Full Document
Problem 20.56 Part A Find the displacement equation for a sinusoidal wave that is traveling in the positive

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 4

Homework Ch 20 Wave - Homework Ch 20 Wave Problem 20.35 A...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online