The power (in watts) used to move air out of the lungs is equal to the...

The power (in watts) used to move air out of the lungs is equal to the air pressure (in N/m²) multiplied by the air flow rate (in m³/s). For quiet breathing (where p = 100 N/m² and flow rate = 100 cm³/s or 1.0 x 10^-4 m³/s), the power involved = 0.01 W ; for loud singing (where p = 4000 N/m² and flow rate = 400 cm³/s or 4.0 x 10⁴ m³/s), the power involved = 1.6 W.

In problem P7 (above), we determined that the total power involved in moving the air at a pressure of 4000 N/m² (loud singing) = 1.6 W. The fraction (in %) of this total power that is converted into and radiated as sound = _______ %.

Solutions

Expert Solution

genius_generous answered 3 weeks ago

Next > < Previous

Related Solutions

Calculate the energy per bit per noise power density where the signal power is 10 Watts...

Calculate the energy per bit per noise power density where the signal power is 10 Watts and the bit is 10 Mbps in an environment of 27 degree celcius?

Compare blood flow (perfusion) and air/water flow (ventilation) in fish gills, frog lungs, bird lungs and...

Compare blood flow (perfusion) and air/water flow (ventilation) in fish gills, frog lungs, bird lungs and mammalian lungs. Consider how terms of the Fick Diffusion Equation (write out) are manifest in the design of the exchange surfaces.

The power source in a particular welding setup generates 3119 watts that can be transferred to...

The power source in a particular welding setup generates 3119 watts that can be transferred to the work surface with a heat transfer factor of 0.65. The metal to be welded is low carbon steel. The melting factor in the operation is 0.4. A continuous fillet weld is to be made with a cross-sectional areas of 20 mm2. Determine the travel speed in mm/s at which the welding operation can be accomplished. Hint: See Table 28.2 for the melting temperature...

We have to calculate the value of Power of an electric DC motor IN WATTS made...

We have to calculate the value of Power of an electric DC motor IN WATTS made from scratch. The only known values that we have are: The Voltage (V) which is 9V and the current (I) that we are using which is 3 A, also the value of "n" which is n= 90.16 m (the number of turns of the wire used in the motor) I already asked here for this problem and someone answered this: Voltage = 9 V,...

A heat lamp produces 22.0 watts of power at a wavelength of 6.8 μm . How...

A heat lamp produces 22.0 watts of power at a wavelength of 6.8 μm . How many photons are emitted per second? (1 watt = 1 J/s). The answer needs to be in s-1

Explain in detail how the movements of the diaphragm and ribs draw air into the lungs...

Explain in detail how the movements of the diaphragm and ribs draw air into the lungs during the inhalation phase of the respiratory cycle during quiet breathing. Include in your answer the effects on intrapleural and intrapulmonary pressures and how these effects cause air to move into the lungs.

Where is air almost completely humidified? A. In the nose B. In the lungs C. In...

Where is air almost completely humidified? A. In the nose B. In the lungs C. In the alveoli D. In the trachea question 1

1) If the volume of the lungs increases, what happens to the air pressure inside the...

1) If the volume of the lungs increases, what happens to the air pressure inside the lungs? Select one: a. increases twice the amount of the increase in volume b. increases c. remains constant d. increases and possibly damages the lungs e. decreases 2) During exercise, which of the following contract for active exhalation? Select one: a. rectus abdominis and internal intercostal muscles b. pectoralis major and serratus anterior muscles c. diaphragm and internal intercostal muscles d. rectus abdominis and...

A) The total volume of air in Jeffrey’s lungs is 5800 mL. If his IC is...

A) The total volume of air in Jeffrey’s lungs is 5800 mL. If his IC is 3200 and his RV is 1000, calculate his ERV and FRC. B) The total volume of air Sally can inhale after a quiet exhalation is 3400 mL. When Sally is sitting still she inhales 400 mL and there is 2200 mL left in her lungs. Calculate or figure out from the information given in the question the following values TV, TLC, IC, FRC, IRV....

1. What is the total pressure inside the lungs when air is not moving into or...

1. What is the total pressure inside the lungs when air is not moving into or out of the lungs? 2. By how much does the pressure inside the lungs change during 1 entire quiet breath. 3. How does intrapleural pressure compare to intrapulmonary pressure, and why is this difference physiologically important/

Subjects