When you use a hand pump to inflate the tires of your bicycle, the pump gets warm
Question:
When you use a hand pump to inflate the tires of your bicycle, the pump gets warm after a while. Why? What happens to the temperature of the air in the pump as you compress it? Why does this happen? When you raise the pump handle to draw outside air into the pump, what happens to the temperature of the air taken in? Again, why does this happen?
Step by Step Answer:
The adiabatic compression of the air in the pu...View the full answer
University Physics with Modern Physics
ISBN: 978-0133977981
14th edition
Authors: Hugh D. Young, Roger A. Freedman
Related Video
An air pump is a device used to inflate or deflate objects by moving air in or out of them. There are many different types of air pumps, ranging from manual hand pumps to electrically powered pumps, and they are used for a variety of purposes. John had trouble blowing up many balloons without a balloon pump and experienced pain. He solved this problem by using an empty plastic bottle with a rectangular-shaped hole in the cap, a cut piece of balloon stretched over it, and a small hole in the bottle. By pressing and releasing the bottle, he created an air pump to inflate the balloons without any discomfort. Air pumps utilize fluid mechanics and thermodynamics principles to increase air pressure inside an object being inflated, such as a bicycle tire. The ideal gas law is used to calculate the pressure inside the tire. As air pressure increases, the object becomes more rigid and can support more weight. The efficiency of the pump is determined by how much of the work done is converted into useful work, such as inflating the tire, and how much is lost as heat. Understanding these principles is important to effectively use and optimize the use of air pumps.
Students also viewed these Physics questions
-
A hand pump is used to inflate a bicycle tire to a gauge pressure of 482 kPa (about 70 lb/in2). How much work must be done if each stroke of the pump is an adiabatic process? Atmospheric pressure is...
-
A hand pump is being used to inflate a bicycle tire that has a gauge pressure of 40.0 psi. If the pump is a cylinder of length 18.0 in. with a cross-sectional area of 3.00 in. 2, how far down must...
-
Compare the pressure exerted by the tires of your car on the road with the air pressure in the tires. For this project, you need to know the weight of your car, which you can get from a manual or a...
-
Consider the integral where n is an integer. Using the trigonometric identity 1 + tan 2 x = sec 2 x, show that and hence obtain the recurrence relation Use this to find (Recurrence relations of this...
-
A 75-W, 120-V bulb is connected in parallel with a 25-W, 120-V bulb. What is the net resistance?
-
The auditors of Update Company were considering the use of a computer-assisted audit program to gather and document evidence from their client's computerized files. Most of the transactions,...
-
Lagos Toy Company reported the following comparative balance sheet: Compute for Lagos: a. Collections from customers during 2009. Sales totaled $140,000. b. Payments for inventory during 2009. Cost...
-
Writing Improvement Exercise: Implying Bad News Your Task. Revise the following statements to imply the bad news. If possible, use passive-voice verbs and subordinate clauses to further de-emphasize...
-
Zeta, an automotive battery manufacturer, uses Zinc as a manufacturing input. Zinc costs presently Rs 275 per kg and Zeta uses around 20 metric tonnes of zinc per month. Concerned about the...
-
Both TelecomOne and HighOptic are manufacturers of the latest generation of telecommunication equipment. TelecomOne has focused on the eastern half of the United States. It has manufacturing plants...
-
When you blow on the back of your hand with your mouth wide open, your breath feels warm. But if you partially close your mouth to form an o and then blow on your hand, your breath feels cool. Why?
-
In the carburetor of an aircraft or automobile engine, air flows through a relatively small aperture and then expands. In cool, foggy weather, ice sometimes forms in this aperture even though the...
-
A sample of 10 men was used in a study to test the effects of a relaxant on the time required to fall asleep. Data for 10 subjects showing the number of minutes required to fall asleep with and...
-
why are financial statements made before the closing process? why not prepare them after the closing process?
-
Enzos Concerns Enzo was aware that restructuring the supply base could have detrimental effects if not managed correctly. Simply going for the cheapest suppliers around the world was not a viable...
-
What questions (at least two questions) will Creditors and Employees ask with financial statement information? Explain and provide some examples.
-
Suppose the apple market is competitive. State the long run equilibrium condition of a typical profit-maximizing firm operating in a competitive market. Express your answer using marginal cost and...
-
Write 2 paragraphs about the history of Apple based on accessible articles with text citations and references with APA styles format.
-
What are the possible charm (C) values of a baryon, in general? What is it if the charge is Q = 1, and what is it if Q = 0?
-
In Problems 1522, find the principal needed now to get each amount; that is, find the present value. To get $750 after 2 years at 2.5% compounded quarterly.
-
When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photo electrons is measured to be 1.10 eV. What is the maximum kinetic...
-
The cathode-ray tubes that generated the picture in early color televisions were sources of x rays. If the acceleration voltage in a television tube is 15.0 kV, what are the shortest-wavelength x...
-
An x ray with a wavelength of 0.100 nm collides with an electron that is initially at rest. The x rays final wavelength is 0.110 nm. What is the final kinetic energy of the electron?
-
A runner maintains constant acceleration after starting from rest as she runs a distance of 60.0 m. The runner's speed at the end of the 60.0 m is 9.00 m/s. How much time did it take the runner to...
-
What are the potential consequences of neglecting or underestimating the importance of Risk and Threat Assessment in security and how or if it does influence of crime and criminology in your...
-
7. A ball is projected upward at time t = 0.0 s, from a point on a roof 60 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is 71.6 m/s if air...
Study smarter with the SolutionInn App