(Answered) You exhale at the rate of 14 breaths a minute under normal

Academics

You exhale at the rate of 14 breaths a minute under normal conditions, each breath containing 0.50 L of air. You exhale against an external pressure of about 100 kPa.

a) Calculate the total amount of expansion work you do against the earth's atmosphere in a day.

b) If your typical intake of food is equivalent to 2500 nutritional calories (1 nutritional calorie = 4,184 J), what fraction of a day's energy consumption is this work by the lungs? [It's not this bad however, since the surroundings do work on the lungs when it contracts.]

View complete question

Physics, Academics

Category:- Physics
Reference No.:- M91627034
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Physics

Question small birds can migrate over long distances

Question: Small birds can migrate over long distances without feeding, storing energy mostly as fat rather than carbohydrate. (Figure 1) Fat is a good form of energy storage because it provides the most energy per unit m ...

Question a student is working in an optics lab and has a

Question: A student is working in an optics lab and has a light bulb which is 90 cm from a screen. She needs to make a real image of the bulb on the screen and she has a positive lens with a focal length of 12.5 cm. Find ...

Consider the following examples which involve energy being

Consider the following examples, which involve energy being transformed from one kind to another. Identify the initial input & final output forms of the energy in each case. Identifying intermediate energy conversions ma ...

How are chemical and physical changes different what are

How are chemical and physical changes different. What are some demonstrations that you might do to help your students differentiate between a chemical and physical change?

Question a parallel-plate capacitor is formed from two 15

Question: A parallel-plate capacitor is formed from two 1.5 cm -diameter electrodes spaced 2.1 mm apart. The electric field strength inside the capacitor is 1.0 Ã-10 6 N/C. What is the charge (in nC) on each electrode? ...

A particle starts from the origin at t 0 with an initial

A particle starts from the origin at t = 0 with an initial velocity having an x component of 26.6 m/s and a y component of -14.8 m/s. The particle moves in the xy plane with an x component of acceleration only, given by ...

Question a researcher observes hydrogen emitting photons of

Question: A researcher observes hydrogen emitting photons of energy 1.13eV . What are the quantum numbers of the two states involved in the transition that emits these photons? Express your answers as integers separated ...

Question a projectile is launched from ground level to the

Question: A projectile is launched from ground level to the top of a cliff which is 195 m away and 135 m high. If the projectile lands on top of the cliff 4.7 s after it is fired, find the initial velocity of the project ...

Question an object of mass m attached to a spring of force

Question: An object of mass m attached to a spring of force constant k oscillates with simple harmonic motion. The maximum displacement from equilibrium is A and the total mechanical energy of the system is E. What is th ...

Question a parallel-plate air capacitor has a capacitance

Question: A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 2.55 ÂµC. (a) What is the potential difference between the plates? (b) If the charge is kept constant, what will be the po ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Physics Expert