Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
4th Edition
ISBN: 9780133953145
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 20, Problem 48EAP
.0 × l023 nitrogen molecules collide with a 10 cm2 wall each second. Assume that the molecules all travel with a speed of 400 m/s and strike the wall head-on. What is the pressure on the wall?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The bends during flight. Anyone who scuba dives is
advised not to fly within the next 24 h because the air mixture for
PRACTICE
diving can introduce nitrogen to the bloodstream. Without allowing
the nitrogen to come out of solution slowly, any sudden
air-pressure reduction (such as during airplane ascent) can result in
the nitrogen forming bubbles in the blood, creating the bends,
which can be painful and even fatal. Military special operation
forces are especially at risk. What is the change in pressure on such
a special-op soldier who must scuba dive at a depth of 20 m in
seawater one day and parachute at an altitude of 7.6 km the next
day? Assume that the density of seawater is 1029 kg/m² and the
average air density within the altitude range is 0.87 kg/m³. (Walker,
2014)
A 0.435 kg0.435 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger. The cylinder comes to rest some distance above the plunger. The plastic tube has an inner radius of 6.56 mm6.56 mm and is frictionless. Neither the plunger nor the metal cylinder allow any air to flow around them.
If the plunger is suddenly pushed upwards, increasing the pressure between the plunger and the metal cylinder by a factor of 2.792.79, what is the initial acceleration ?a of the metal cylinder? Assume the pressure outside of the tube is 1.00 atm1.00 atm and that the top of the tube is open to the air.
Carbon dioxide molecules have an average speed of 25.0m/s at a given temperature and pressure. What is the average speed of carbon monoxide molecules at the same conditions?
Chapter 20 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
Ch. 20 - Prob. 1CQCh. 20 - Prob. 2CQCh. 20 - Prob. 3CQCh. 20 - Prob. 4CQCh. 20 - Prob. 5CQCh. 20 - Prob. 6CQCh. 20 - Prob. 7CQCh. 20 - Prob. 8CQCh. 20 - Prob. 9CQCh. 20 - Prob. 1EAP
Ch. 20 - Prob. 2EAPCh. 20 - Prob. 3EAPCh. 20 - Prob. 4EAPCh. 20 - Prob. 5EAPCh. 20 - Prob. 6EAPCh. 20 - Prob. 7EAPCh. 20 - Prob. 8EAPCh. 20 - Prob. 9EAPCh. 20 - Prob. 10EAPCh. 20 - Prob. 11EAPCh. 20 - Prob. 12EAPCh. 20 - Prob. 13EAPCh. 20 - Prob. 14EAPCh. 20 - Prob. 15EAPCh. 20 - Prob. 16EAPCh. 20 - Prob. 17EAPCh. 20 - Prob. 18EAPCh. 20 - Prob. 19EAPCh. 20 - Prob. 20EAPCh. 20 - Prob. 21EAPCh. 20 - Prob. 22EAPCh. 20 - Prob. 23EAPCh. 20 - Prob. 24EAPCh. 20 - Prob. 25EAPCh. 20 - A 10 g sample of neon gas has 1700 J of thermal...Ch. 20 - Prob. 27EAPCh. 20 - A 6.0 m × 8.0 m × 3.0 m room contains air at 20°C....Ch. 20 - Prob. 29EAPCh. 20 - Prob. 30EAPCh. 20 - .0 mol of a monatomic gas interacts thermally with...Ch. 20 - Prob. 32EAPCh. 20 - A rigid container holds 0.20 g of hydrogen gas....Ch. 20 - Prob. 34EAPCh. 20 - .0 mol of monatomic gas A interacts with 3.0 mol...Ch. 20 - Two containers hold several balls. Once a second,...Ch. 20 - Prob. 37EAPCh. 20 - From what height must an oxygen molecule fall in a...Ch. 20 - Dust particles are 10m in diameter. They are...Ch. 20 - Prob. 40EAPCh. 20 - Photons of light scatter off molecules, and the...Ch. 20 - Prob. 42EAPCh. 20 - Prob. 43EAPCh. 20 - a. Find an expression for the vrms of gas...Ch. 20 - Equation 20.3 is the mean free path of a particle...Ch. 20 - Uranium has two naturally occurring isotopes. 238U...Ch. 20 - On earth, STP is based on the average atmospheric...Ch. 20 - .0 × l023 nitrogen molecules collide with a 10 cm2...Ch. 20 - Prob. 49EAPCh. 20 - Prob. 50EAPCh. 20 - A 100 cm3 box contains helium at a pressure of 2.0...Ch. 20 - 2.0 g of helium at an initial temperature of 300 K...Ch. 20 - Prob. 53EAPCh. 20 - Scientists studying the behavior of hydrogen at...Ch. 20 - Prob. 55EAPCh. 20 - Prob. 56EAPCh. 20 - In the discussion following Equation 20.43 it was...Ch. 20 - Prob. 58EAPCh. 20 - n moles of a diatomic gas with Cv= 52 has initial...Ch. 20 - The 2010 Nobel Prize in Physics was awarded for...Ch. 20 - Prob. 61EAPCh. 20 - Prob. 62EAPCh. 20 - 63. moles of a monatomic gas and moles of a...Ch. 20 - Prob. 64EAPCh. 20 - 65. An experiment you're designing needs a gas...Ch. 20 - 66. Consider a container like that shown in...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A vertical cylinder of cross-sectional area A is fitted with a tight-fitting, frictionless piston of mass m (Fig. P18.40). The piston is not restricted in its motion in any way and is supported by the gas at pressure P below it. Atmospheric pressure is P0. We wish to find the height h in Figure P18.40. (a) What analysis model is appropriate to describe the piston? (b) Write an appropriate force equation for the piston from this analysis model in terms of P, P0, m, A, and g. (c) Suppose n moles of an ideal gas are in the cylinder at a temperature of T. Substitute for P in your answer to part (b) to find the height h of the piston above the bottom of the cylinder. Figure P18.40arrow_forwardA cylinder that has a 40.0-cm radius and is 50.0 cm deep is filled with air at 20.0C and 1.00 atm (Fig. P10.74a). A 20.0-kg piston is now lowered into the cylinder, compressing the air trapped inside as it takes equilibrium height hi (Fig. P16.74b). Finally, a 25.0-kg dog stands on the piston, further compressing the air, which remains at 20C (Fig. P16.74c). (a) How far down (h) does the piston move when the dog steps onto it? (b) To what temperature should the gas be warmed to raise the piston and dog back to hi?arrow_forwardA gas is in a container of volume V0 at pressure P0. It is being pumped out of the container by a piston pump. Each stroke of the piston removes a volume Vs through valve A and then pushes the air out through valve B as shown in Figure P19.74. Derive an expression that relates the pressure Pn of the remaining gas to the number of strokes n that have been applied to the container. FIGURE P19.74arrow_forward
- 9. ssm When a .22-caliber rifle is fired, the expanding gas from the burn- ing gunpowder creates a pressure behind the bullet. This pressure causes the force that pushes the bullet through the barrel. The barrel has a length of 0.61 m and an opening whose radius is 2.8 × 10-³ m. A bullet (mass = 2.6 X 10-³ kg) has a speed of 370 m/s after passing through this barrel. Ignore friction and determine the average pressure of the expand- ing gas.arrow_forwardIn a period of 1.00 s , 5.00 x 1023 nitrogen molecules strike a wall with an area of 8.00 cm2. Assume the molecules move with a speed of 300 m/s and strike the wall head- on in elastic collisions. What is the pressure exerted on the wall? Note: The mass of one N2 molecule is 4.65 x 10-26 kgarrow_forwardIn a period of 1.00 s, 5.00 × 1023 nitrogen molecules strike a wall with an area of 8.00 cm2. Assume the molecules move with a speed of 300 m/s and strike the wall head-on in elastic collisions. What is the pressure exerted on the wall? Note: The mass of one N2 molecule is 4.65 × 10-26 kg.arrow_forward
- The plunger of a syringe has an internal diameter of 1.0 cm and the end of the needle has an internal diameter of 0.35 mm. A practitioner lightly squeezes the plunger, but no serum is emitted by the needle into a vein. So the practitioner gradually increases the squeezing force that she exerts on the plunger such that serum begins to be emitted from the needle into the vein. Assuming no surface tension or friction, what is the minimum squeezing force that the practitioner appli to the plunger in order that serum begins to be emitted from the needle into the vein? Take the pressure of blood in the vein to be 20 mmHg above that of atmospheric pressure. 0.70 N 1.4 N 3.3 N 1.7 N 0.21 N 0.24 Narrow_forwardhigh-pressure gas cylinder contains 50.0 L of toxic gas at a pressure of 1.35 × 107 Pa and a temperature of 25.0°C. Its valve leaks after the cylinder is dropped. The cylinder is cooled to dry ice temperature (-78.5°C) to reduce the leak rate and pressure so that it can be safely repaired. A) what is the final pressure, in pascals, in the tank assuming negligible amount of gas leaks while being cooled and that there is no phase change ? B) What is the final pressure in pascals if one tenth of the gas escapes during the process? C) to what tempature in kelvins must tank be cooled from inital state to reduce the pressure to 1.00 atm (assuming the gas does not change phase and there is no leakage during cooling)?arrow_forwardThe mean free path of an oxygen gas molecule under a pressure of 1 atmosphere at 0° C is about 6 × 10-6 cm. If the time required for a molecule to travel the mean free path is 125 picosecond, what is the mean speed of the molecule in m/s?arrow_forward
- 54. Go When you push down on the handle of a bicycle pump, a piston in the pump cylinder compresses the air inside the cylinder. When the pressure in the cylinder is greater than the pressure inside the inner tube to which the pump is attached, air begins to flow from the pump to the inner tube. As a biker slowly begins to push down the handle of a bicycle pump, the pressure inside the cylinder is 1.0 × 10° Pa, and the piston in the pump is 0.55 m above the bottom of the cylinder. The pressure inside the inner tube is 2.4 X 10° Pa. How far down must the biker push the handle before air begins to flow from the pump to the inner tube? Ignore the air in the hose connecting the pump to the inner tube, and assume that the tempera- ture of the air in the pump cylinder does not change.arrow_forwardFive gas molecules have speeds of 500, 600, 700, 800, and 900 m/s. What is the rms speed? What is the average speed?arrow_forwardYou have a tube where water enters at a velocity of 10.0 m/s, ascends 5.0 m, and then exits. The pressure pushes the water in at 250 kPa, and is measured come out at 150 kPa. The outcoming water is, faster than the incoming water. slower than the incoming water. the same speed as the incoming water.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
A Level Physics – Ideal Gas Equation; Author: Atomi;https://www.youtube.com/watch?v=k0EFrmah7h0;License: Standard YouTube License, CC-BY