Question 5. A nailing gun produces a short, loud sound as the tool drives in a...

Question 5.
A nailing gun produces a short, loud sound as the tool drives in a nail. The sound has an intensity
level of 136 dB at the ear of the user (0.2 m from the tool), for a duration of 0.1 s.
(a) What is the corresponding sound intensity? (1.5 marks)
(b) The tool is a good approximation to a point source of sound. What is the rate at which it
produces sound energy? (1.5 marks)
(c) How much energy would be transported to the user’s eardrum (of area 6.0 x 10-5 m2) as the
tool drives in a nail? (1.5 marks)
(d) Explain why earplugs or earmuffs are recommended to be worn when using the tool.
(0.5 mark)

Solutions

Expert Solution

genius_generous answered 1 year ago

Next > < Previous

Related Solutions

In 200 words explain how loud is too loud? When is a sound too loud? What...

In 200 words explain how loud is too loud? When is a sound too loud? What can be done about sounds/noises that are too loud for you?

A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm,

A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm, but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure amplitude of the sound waves is limited to 10.0 Pa. Under the conditions of this factory, the bulk modulus of air is 1.23×105 Pa . The speed of sound in air is 344 m/s.Part AWhat is the highest-frequency sound to which this machine can...

There are two main ways to describe how loud a sound is. One is that you...

There are two main ways to describe how loud a sound is. One is that you can describe its intensity, I, measured in W/m2, which is the amount of energy per unit time, per unit area, transported by the sound. However, this is not very close to the human experience of sound loudness. The human experience of loudness (actually like the way most of our senses work) is that each factor of 10 in intensity sounds like the same sized...

A very loud train whistle has an acoustic power output of 200 Watts. If the sound...

A very loud train whistle has an acoustic power output of 200 Watts. If the sound energy spreads out spherically, what is the intensity level in dB at a distance of 200 meters from the train? a. 82 dB b. 86 dB c. 89 dB d. 95 dB e. 98 dB

A woman stands a distance d from a loud motor that emits sound uniformly in all...

A woman stands a distance d from a loud motor that emits sound uniformly in all directions. The sound intensity at her position is an uncomfortable 3.3×10-3 W/m2. At a distance 2.9 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

Constant Sound Random Sound No Sound Subject’s Gender 7 5 2 M 4 5 2 M...

Constant Sound Random Sound No Sound Subject’s Gender 7 5 2 M 4 5 2 M 6 3 3 F 8 4 1 M 6 4 2 F 6 7 1 F 2 2 4 F 9 2 4 M If each subject participated in all the three conditions, and we now know about the gender of the subjects too. Could you write down the test statistics for the gender variable? . . What is the p-value of the gender...

QUESTION 1 - Classic Sound is a start-up company that produces vinyl records for numerous record...

QUESTION 1 - Classic Sound is a start-up company that produces vinyl records for numerous record labels worldwide. The company has two full-time employees working in the production department while the CEO splits her time 80/20% between developing new business and overseeing the production process. Information taken from the accounting records for the first three months of operations is shown below. Beginning raw materials inventory $ 0 Purchases of raw materials 57,500 Ending raw materials inventory 28,750 Direct labour 46,750 ...

The short-run production function for a manufacturer of DVD drives is as follows:

The short-run production function for a manufacturer of DVD drives is as follows: Number of Workers (Quantity of Labor) Total Output of DVD Drives0 0 1 70002 200003 300004 360005 400006 42000Calculate the average product (AP) at each quantity of labor.Calculate the marginal product (MP) at each quantity of labor.After which worker do diminishing marginal returns set in?In the region of diminishing marginal returns, what is happening to marginal cost? Explain.

Electric Drives: Reluctance Drives Question Determine the phase excitation sequence, and draw the rotor positions, in...

Electric Drives: Reluctance Drives Question Determine the phase excitation sequence, and draw the rotor positions, in a variable-relcutance step drive for a counter-clockwise rotation. Please answer with details. Thanks in advance :)

An audio system 1 produces a sound level of 90.0 dB and system 2 produces a...

An audio system 1 produces a sound level of 90.0 dB and system 2 produces a sound level of 93.0 dB. (a) Determine the ratio of the intensities (in W/m 2 ) . (b) Suppose a recording device was placed 2 m away from s ystem 2 . H ow far away from system 1 must that recording device be placed in order for the intensity to be the same as it was near system 2?

Subjects