A worker is exposed to noise levels of 91 dBA for 30 mins, 83 dBA for 2 hours and a background of 73 dBA for the remainder of the 8 hour shift. What is their 8 hour noise exposure, list two actions required by the employer?
Q: A sound meter records 95 dBA in a different location in the plant. What exposure time without…
A: According the National Institute for Occupational Safety - NIOSH -The exposure to noise should be…
Q: On a hot summer day, the temperature of air in Arizona reaches 101°F. What is the speed of sound in…
A: Given: The temperature of the given day is 101 °F. The speed of the sound at 0° C is 331 m/s.…
Q: During a thunder storm over the summer, you want to estimate the distance in kilometers (not miles!)…
A: During a thunder storm over the summer, if we want to estimate the distance in kilometers of a flash…
Q: 5. The ideal gas analysis for the root-mean-square velocity of the molecules gives the yRT y =…
A: Solution: Given that, The velocity of root- mean- square as: v=γRTM Where, Where, γ=Absolute…
Q: A sound wave in a steel rail of a railroad track has a frequency of 641 Hz and a wavelength of 5.0…
A: Given data *The given frequency is f = 641 Hz *The given wavelength is λ=5.0 m
Q: The atmosphere of Mars is much less dense than the atmosphere of the Earth so the speed of sound on…
A:
Q: Imagine two workers who were exposed to occupational noise for 8 hours per day over a 20-year Worker…
A: Sound pressure waves repeat themselves every second, in other words, frequency is the number of…
Q: Show the complete solution to the following problem. At one atmospheric pressure and at a…
A: Given: at 0°C , vo=33,145 cm/sfor each degree rise in temperatureincrease in speed = 60 cm/swe have…
Q: The range of audible frequencies is from about 40 Hz to 40000 Hz. What is the range of the…
A:
Q: The inverse square law expresses the attenuation of intensity as sound moves away from its source:…
A:
Q: What is the wavelength of the sound emitted by an airplane flying at an elevation of 12192 meters…
A: The height h=12192m T=-55.3C f=106.4Hz
Q: A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will…
A:
Q: The velocity of sound in air at sea level is above 1100 feet per second. If a man hears a clap of…
A:
Q: In an FM radio receiver, the radio signal detected is 58dB greater than the noise signal. What is…
A: The ratio of two variables of same unit on a logarithmic scale is usually expressed in unit of…
Q: Consider a wedge that is 30 cm long and 8 cm thick. Wedge's attenuation is 0.3 /cm. Derive the…
A: The amplitude (Ay) of an electromagnetic wave exponentially decays from the incident amplitude (A0)…
Q: Sixty adults with gum disease were asked the number of times per week they used to floss before…
A: Solution: As per the given data, The complete table is given below: Total number of adults= 60…
Q: On a hot summer day, the temperature of air in Arizona reaches 113°F. What is the speed of sound in…
A: Given: Temperature of air, T = 113 °F Speed of sound at 0°C, v0 = 331 m/s
Q: A Sound wave in an unlenown fluid medium takes Il ms to travel 24.2m. What is the bulk modulus A Of…
A: Given Distance covered by the sound wave is d=24.2 m Time taken to cover the distance is t=11…
Q: Certain species of mice have a threshold of hearing below that of humans. Suppose you're sitting on…
A: If the sound of the rustling grass is at the threshold of hearing for both the human and the mouse,…
Q: Two students hear the same sound and their eardrums receive the same power from the sound wave. The…
A: Given; Let there be two students A and B. Both receives the same power from sound wave i.e. PA =…
Q: With the installation of noise suppression materials, the noise level in an auditorium was reduced…
A:
Q: There was an accident and NASA engineers are trying to sort out where two of their Mars Rovers,…
A: Recall VαTSpeed of sound is proportional to square root of temperature.
Q: The magnitude of dB is inversely proportional to:
A: Biot-Savart Law: This question is related to Biot-Savart Law
Q: A lightning bolt is observed and the resultant thunderclap is heard 5 seconds afterwards. Assuming…
A: Given :- speed of sound in air v= 340 m/s time after which Thunderclap heard is t = 5 sec
Q: 1. A 50-cd point light source is 3.0 inches above the desk. What is the surface lighting on the…
A: 1. Given data: - The luminous intensity is I = 50-cd. The distance of the light source above the…
Q: The warning tag on a lawn mower states that it produces noise at a level of 60.2 dB. What is this in…
A: Given data: The sound level produced by the lawn mover is β=60.2 dB
A worker is exposed to noise levels of 91 dBA for 30 mins, 83 dBA for 2 hours and a background of 73 dBA for the remainder of the 8 hour shift. What is their 8 hour noise exposure, list two actions required by the employer?
Step by step
Solved in 2 steps
- Ever since seeing as shown in the previous chapter, you have been fascinated with the hearing response in humans. You have set up an apparatus that allows you to determine your own threshold of hearing as a function of frequency. After performing the experiment and recording the results, you graph the results, which look like as shown. You are intrigued by the two dips in the curve at the right-hand side of the graph. You measure carefully and find that the minimum values of these dips occur at 3 800 Hz and 11 500 Hz. Performing some online research, you discover that the outer canal of the human ear can be modeled as an air columnopen at the outer end and closed at the inner end by the eardrum. You use this information to determine the length of the outer canal in your ear.NOTE: for this question, give all answers with 4 significant figures. A motion detector measures distance to the nearest object by using a speaker and a microphone. The speaker clicks 30 times a second. The microphone detects the sound bouncing back from the nearest object in front of it. The computer calculates the time delay between the making of the sound and receiving the echo. It knows the speed of sound (about 343 m/s at room temperature) and from that, it can calculate the distance to the object from the time delay. A. If the nearest object in front of the detector is too far away, the echo will not get back before a second click is emitted. Once that happens, the computer has no way of knowing that the echo isn't an echo from the second click and the detector doesn't give correct results anymore. Once the speaker emits a click, how much time does the echo have to return to the microphone before the next click is emitted? 0.03333 What's the furthest away the object can be so…you do hot have a thermometer to measure temp you are able to measures the speed of sound through the air. if you measure the sound to be 349m/s. what is the air temp? V=331.4m/s + (0.606m/s/1°C)T apply this formula and answer with the exact value
- On a day when the speed of sound in air is 340 m/s, a lightning bolt is observed and the resultant thunderclap is heard 2 seconds afterwards. About how far away was the lightning bolt?The intensity of sound high as a multiple of the average minimum threshold of hearing intensity is related to the decibel level D or loudness of sound according to I=10^D/10 (A) express 10^D/10 using radical notation 10^D/10= (B)The background noise level of a relatively quiet room has a decibel reading of 31. Find the intensity of this noise level round your answer to decimal places (C)a decibel reading of 132 is at the threshold of pain. if I2 is the intensity of the threshold and I1 is the intensity found and part B express or a show I2/I1 as a power of 10 I2/I1=10^ approximate the ratio(round your answer to two decimal places) _____x10^10A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will the child have increased hearing sensitivity?
- please type so that I can read your solution do not handwriteA threshold of hearing has an intensity of 10- 12 W/m^2 (a sound level of 0Db). how much more intense than the threshold of hearing is a sound of 10 DB? The threshold of hearing has an intensity of 10^-12 w/m^2 how much more intense than the threshold of hearing is a sound of 40db?On the planet Arrakis a male ornithoid is flying toward his mate at a speed of 30.0 m/s while singing at a frequency of 1220 Hz.
- On a hot summer day, the temperature of air in Arizona reaches 121°F. What is the speed of sound in air at this temperature? (The speed of sound at 0°C is 331 m/s. Use the conversion 0°C = 273 K as necessary.)Sound travels at 1540 m/s in body tissue. If an ultrasound device sends out a frequency of 10 MHz (10,000,000 Hz) what is the wavelength of these sound wavesOnly the first column