« previous next »

Author Question: Suppose you deflate a bicycle tire by depressing the air valve. Why does air rush out of the tire? ... (Read 169 times)

Bernana

  • Hero Member
  • *****
  • Posts: 530
on: Jul 13, 2018
Suppose you deflate a bicycle tire by depressing the air valve. Why does air rush out of the tire? After the air stops rushing out of the tire, is the tire empty? Explain your answer.
  What will be the ideal response?

Question 2

The atmospheric layer that is influenced by friction is called the friction layer or the ___________________ _ layer.
  Fill in the blank with correct word.


dudman123

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: The air pressure in the bicycle tire is higher than in the surrounding surface air, which creates a difference in pressure. The pressure difference establishes a force (called the pressure gradient force) that causes the air to move from higher pressure toward lower pressure. Consequently, if we remove the air valve on the tire, air is going to flow out the tire until the same pressure exists inside the tire as outside the tire. The tire will not deflate entirely, only as long as there is a pressure gradient.

Answer to Question 2

ANSWER: planetary boundary


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

The camshaft is rotated in relation to the camshaft by the PCM to provide changes in valve timing. The camshaft is rotated in relation to the camshaft by the PCM to provide changes in valve timing.
A steady but low reading could indicate retarded valve or ignition timing. A steady but low reading could indicate retarded valve or ignition timing.
Start the valve adjustment procedure by first disconnecting and labeling, if necessary, all ... Start the valve adjustment procedure by first disconnecting and labeling, if necessary, all ...
The Schrader valve on this General Motors 3800 V-6 is located next to the fuel-pressure regulator. The Schrader valve on this General Motors 3800 V-6 is located next to the fuel-pressure regulator.
A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ... A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ...
A PCV valve shown in a cutaway valve cover showing the baffles that prevent liquid oil from being ... A PCV valve shown in a cutaway valve cover showing the baffles that prevent liquid oil from being ...
Video: Ultrasound of a Fetus (Sonogram)

For a complete list of videos, visit our video library