Related questions
Question
Transcribed Image Text:**Title: Understanding Sound Intensity and Energy Impact on the Eardrum**
---
### Problem 1: Calculating the Energy Incident on the Eardrum
A speaker plays a sound at a consistent amplitude from a distance of 3.0 meters. It produces sound for a total duration of 5.0 seconds. At your ear's location, the measured sound intensity is \(1.7 \times 10^{-7} \, \text{W/m}^2\).
**Question:**
- If your eardrum has a surface area of 85 mm\(^2\) (\(= 8.5 \times 10^{-5} \, \text{m}^2\)), how much energy is incident on your eardrum during the 5.0 seconds of sound playback?
Your answer should be provided in units of Joules (J) and expressed in scientific notation.
---
### Problem 2: Sound Intensity at a Greater Distance
**Question:**
- If the speaker is moved so that it is now 9.0 meters from your ear, what will the sound intensity at your ear's location be? Assume the sound wave emitted from the speaker is a spherical wave.
Your answer should be in units of \(\text{W/m}^2\), expressed in scientific notation, without including the units in the answer box.
---
These problems will help you understand the relationship between distance, sound intensity, and the energy received by a surface, such as the eardrum. Analyzing such interactions is essential for comprehending principles of acoustics and sound wave behavior.
Expert Solution
arrow_forward
Step 1
Intensity of sound is inversely proportional to square of distance from the source
Step by stepSolved in 2 steps with 1 images
Knowledge Booster
Similar questions
- Chapter 16, Problem 069 Your answer is partially correct. Try again. ES. lem The bellow of a territorial bull hippopotamus is measured at 116 dB above the threshold of hearing. What is the sound intensity? Hint: The threshold of human hearing is Io = 1.00 x 10-12 W/m2. plem %3D blem Number Units W/m^2 ▼ oblem the tolerance is +/-5% oblem roblem SHOW HINT Problem LINK TO TEXT Problem Problem By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Problem Question Attempts: 1 of 6 used SUBMIT ANSWER SAVE FOR LATER Problem Earn Maximum Points available only if you 8:02 PM 4/29/2020 19 e here to search 21 ASL pause break prt sc sysrq f11 f12 insert f8 f9 f10 f4 f5 f6 f7 f2 f3 backspace & %24 80 4 96arrow_forwardq/ A single-atom crystalline chain with an Space between 3x10 ^ -10m. If the velocity of sound is equal to 300 m / sec, calculate the cutoff frequency wmarrow_forwardThe pan flute is a musical instrument consisting of a number of closed-end tubes of different lengths. When the musician blows over the open ends, each tube plays a different note. The longest pipe is 0.33 m long. What is the frequency of the note it plays?arrow_forward
- A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 7.69 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest insect a bat can detect? ?mmarrow_forwardThe speed of sound in room temperature (20°C) air is 343 m/s; in room temperature helium, it is 1010 m/s. The fundamental frequency of an open-closed tube is 315 Hz when the tube is filled with air. What is the fundamental frequency if the air is replaced with helium?arrow_forwardYou hear a sound of (5.6x10^1) decibels. What is the intensity? Give your answer in microwatts/m2 to 2 sf. Assume the threshold of human hearing is 1.0x10-12 W/m². Use two significant figures for your answer. Note: 1 µW = 1×106 W Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: х10 Answerarrow_forward
- A round speaker emits sound waves uniformly in all direction. At a distance of 40.0m from the speaker, the sound intensity is 35 dB. What is the sound intensity level in a distance of 10.0m.arrow_forwardA bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 64.0 kHz, and if the speed of sound in air is 340 m/s, what is the smallest insect a bat can detect?arrow_forwardA physics professor demonstrates the Doppler effect by tying a 450 HzHz sound generator to a 1.0-mm-long rope and whirling it around her head in a horizontal circle at 100 rpm. What is the difference between the highest frequency heard by a student in the classroom and the initial frequency of the sound generator?arrow_forward
arrow_back_ios
arrow_forward_ios