ZuoTi.Pro
Question

Question 4 Suppose that the sound level of a conversation is initially at an angry 70 dB and then drops to a soothing 50 dB.

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

O sol 21 B = 70db f= 508H2 B2 = 500B 100 À The infensity sound Level B = 10 log ( 2 ) 70 = 10 long long 1078 I1 = (107688 % (© The inofensity and The amper fude relation 1 = 2725% of lov N2343 m/s of a 5ooth for 1.2189/m3 TJO V $* = netop for 1010-5

0 0
Add a comment
Know the answer?
Add Answer to:
Question 4 Suppose that the sound level of a conversation is initially at an angry 70...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Suppose that the sound level of a conversation is initially at an angry 71 dB and...

    Suppose that the sound level of a conversation is initially at an angry 71 dB and then drops to a soothing 53 dB. Assuming that the frequency of the sound is 506 Hz, determine the (a) initial and (b) final sound intensities and the (c) initial and (d) final sound wave amplitudes. Assume the speed of sound is 347 m/s and the air density is 1.21 kg/m3.

  • A 85.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The...

    A 85.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at 20.0°C is 1.20 kg/m3. Speed of sound in air at 20.0°C is 343 m/s. What is the displacement amplitude of a 85.0-Hz sound wave?

  • A 72.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The...

    A 72.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at 20.0°C is 1.20 kg/m3. Speed of sound in air at 20.0°C is 343 m/s. What is the displacement amplitude of a 72.0-Hz sound wave? Answer in nm

  • t = 0 ms (a) (4 marks) A sinusoidal wave moving along a string is shown...

    t = 0 ms (a) (4 marks) A sinusoidal wave moving along a string is shown twice in the figure at time t = 0 (top) and time t = 4t (bottom). After At = 4.0 ms, the crest travels d=6.0 cm in the positive x direction. The equation for the wave is in the form 8 mm H HHHx y(x, t) =Ym sin(kx = wt). t = 4 ms What are (i) ym, (ii)k, (iii) w, and (iv) the...

  • A sound wave has an intensity level of 123.5 dB in air. The density of air...

    A sound wave has an intensity level of 123.5 dB in air. The density of air at 20.0°C is ρ = 1.20 kg/m3. The speed of sound in air at 20.0°C is v = 343 m/s What is the pressure amplitude of the wave? in N/m2

  • The intesity of a wave is I=2π2ρvf2A2, where ρ is the density of the medium, v...

    The intesity of a wave is I=2π2ρvf2A2, where ρ is the density of the medium, v is the speed of wave, f is the frequency, and A is the amplitude. The density of air is 1.29 kg/m3, the speed of sound in air is 343 m/s, the intensity of the reference level required to determine the sound level is 1.0×10−12W/m2. What would be the sound level (in dB ) of a sound wave in air that corresponds to a displacement...

  • You are driving a massive truck and become stuck at a railway crossing. Your truck completely...

    You are driving a massive truck and become stuck at a railway crossing. Your truck completely blocks the railway tracks, which extend in a straight line in both directions. You hear a train approaching when it toots its horn. (a) Let /1 be the intensity of the sound you hear from the horn initially, and 12-70 dB the sound when the train is at half the original distance. ) Calculate the intensity of the horn, 11, in dB. i) Calculate...

  • Question 8 Consider a source emitting sound at frequency f. The speed of sound wave in...

    Question 8 Consider a source emitting sound at frequency f. The speed of sound wave in the medium is v. (a) Show that the Doppler frequency is for a stationary observer as the source approaches at speed v 12 marks (b) Show that the Doppler frequency is f for a stationary observer as the source recedes at speed v, [2 marks (c) Show that the Doppler frequency is vv as the observer and the source are travelling towards each other...

  • Can you please explain all parts I meant to ask this question A block with a...

    Can you please explain all parts I meant to ask this question A block with a speaker bolted to it is connected to a spring having spring constant k = 24.0 N/m and oscillates as shown in the figure below. The total mass of the block and speaker is 3.00 kg, and the amplitude of this unit's motion is 0.500 m. The speaker emits sound waves of frequency 500 Hz. www (a) Determine the highest frequencies heard by the person...

  • 1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s....

    1. The speed of sound in an alcohol at a temperature of 20°C is 1260 m/s. The density of the alcohol at that temperature is 650 kg/m^3. At a temperature of 20°C, find the bulk modulus of the alcohol. 1030 MPa 1080 MPa 1140 MPa 1190 MPa 1240 MPa 2. During a thunderstorm, you hear the sound 4 s after you see the lightning flash. How far did it fall? Assume the temperature outside is approximately 20 1.324 km 1.372...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT