University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
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Textbook Question
Chapter 2, Problem 13CQ
One might think that the internal energy of diatomic gases is given by
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Required information
In a standard tensile test, a steel rod of 1 3 -in. diameter is subjected to a tension force of P = 21 kips. It is given that v=
0.30 and E= 29 × 106 psi.
1-in. diameter
P
P
-8 in.
Determine the change in diameter of the rod. (Round the final answer to six decimal places.)
The change in diameter of the rod is -
in.
5.84 ... If the coefficient of static friction between a table and a uni-
form, massive rope is μs, what fraction of the rope can hang over the
edge of the table without the rope sliding?
5.97 Block A, with weight Figure P5.97
3w, slides down an inclined plane
S of slope angle 36.9° at a constant
speed while plank B, with weight
w, rests on top of A. The plank
is attached by a cord to the wall
(Fig. P5.97). (a) Draw a diagram
of all the forces acting on block
A. (b) If the coefficient of kinetic
friction is the same between A and
B and between S and A, determine
its value.
B
36.9°
5.60
An adventurous archaeologist crosses between two rock cliffs
by slowly going hand over hand along a rope stretched between the
cliffs. He stops to rest at the middle of the rope (Fig. P5.60). The rope
will break if the tension in it exceeds 2.50 X 104 N, and our hero's mass
is 90.0 kg. (a) If the angle is 10.0°, what is the tension in the rope?
(b) What is the smallest value can have if the rope is not to break?
Figure P5.60
Chapter 2 Solutions
University Physics Volume 2
Ch. 2 - Check Your Understanding The recommended daily...Ch. 2 - Check Understanding The density of in a Classroom...Ch. 2 - Check Your Understanding Liquids and solids have...Ch. 2 - Check Your Understanding If you consider a very...Ch. 2 - Check Your Understanding Which has a longer mean...Ch. 2 - Check Your Understanding Suppose 2 moles of helium...Ch. 2 - Two H2 molecules can react with one O2 molecule to...Ch. 2 - Under what circumstances would you expect a gas to...Ch. 2 - A constant-volume gas thermometer contains a fixed...Ch. 2 - Inflate a balloon at room temperature. Leave the...
Ch. 2 - In the last chapter, free convection was explained...Ch. 2 - How is momentum related to the pressure exerted by...Ch. 2 - If one kind of molecule has double the radius of...Ch. 2 - What is the average velocity of the air molecules...Ch. 2 - Why do the atmospheres of Jupiter, Saturn, Uranus,...Ch. 2 - Statistical mechanics says that in a gas...Ch. 2 - Which is more dangerous, a closet where tanks of...Ch. 2 - Experimentally it appears that many polyatomic...Ch. 2 - One might think that the internal energy of...Ch. 2 - You mix 5 moles of H2 at 300 K with 5 moles of He...Ch. 2 - One cylinder contains helium gas and another...Ch. 2 - Repeat the previous question if one gas is still...Ch. 2 - An ideal gas is at a temperature of 300 K. To...Ch. 2 - The gauge pressure in your car tires is...Ch. 2 - Suppose a gas-filled incandescent light bulb is...Ch. 2 - People buying food in sealed bags at high...Ch. 2 - How many moles are there in (a) 0.0500 g of N2 gas...Ch. 2 - A cubic container of volume 2.00 L holds 0.500 mol...Ch. 2 - Calculate the number of moles in the 2.00-L volume...Ch. 2 - An airplane passenger has 100 cm3 of air in his...Ch. 2 - A company advertises that it delivers helium at a...Ch. 2 - According to...Ch. 2 - An expensive vacuum system can achieve a pressure...Ch. 2 - The number density N/V of gas molecules at a...Ch. 2 - A bicycle tire contains 2.00 L of gas at an...Ch. 2 - In a common demonstration, a bottle is heated and...Ch. 2 - A high-pressure gas cylinder contains 50.0 L of...Ch. 2 - Find the number of moles in 2.00 L of gas at 35.0 ...Ch. 2 - Calculate the depth to which Avogadro's number of...Ch. 2 - (a) What is the gauge pressure in a 25.0 cc car...Ch. 2 - A person hits a tennis ball with a mass of 0.058...Ch. 2 - A person is in a closed room (a racquetball court)...Ch. 2 - Five bicyclists are riding at the following...Ch. 2 - Some incandescent light bulbs are filled with...Ch. 2 - Typical molecular speeds (vrms) are large, even at...Ch. 2 - What is the average kinetic energy in joules of...Ch. 2 - What is the ratio of the average translational...Ch. 2 - What is the total translational kinetic energy of...Ch. 2 - The product of the pressure and volume of a sample...Ch. 2 - What is the gauge pressure inside a tank of...Ch. 2 - If the rms speed of oxygen molecules inside a...Ch. 2 - The escape velocity of any object from Earth is...Ch. 2 - The escape velocity from the Moon is much smaller...Ch. 2 - Nuclear fusion, the energy solute of Sun, hydrogen...Ch. 2 - Suppose that the typical speed (vrms) of carbon...Ch. 2 - (a) Hydrogen molecules (molar mass is equal to...Ch. 2 - There are two important isotopes of uranium, U235...Ch. 2 - The partial pressure of carbon dioxide in the...Ch. 2 - Dry air consists of approximately 78% nitrogen,...Ch. 2 - (a) Using data from the previous problem, find the...Ch. 2 - (a) Given that air is 21% oxygen, find the minimum...Ch. 2 - (a) If the partial pressure of water vapor is 8.05...Ch. 2 - To give a helium atom nonzero angular momentum...Ch. 2 - (a) How much heat must be added to raise the...Ch. 2 - A sealed, rigid container of 0.560 mol of an...Ch. 2 - A sample of neon gas (Ne, molar mass M=20.2 g/mol)...Ch. 2 - A steel container of mass 135 g contains 24.0 g of...Ch. 2 - A sealed room has a volume of 24 m3. It's filled...Ch. 2 - Heliox, a mixture of helium and oxygen, is...Ch. 2 - Professional divas sometimes use heliox,...Ch. 2 - In car racing, one advantage of mixing liquid...Ch. 2 - In a sample of hydrogen sulfide ( M=34.1 g/mol) at...Ch. 2 - Using the approximation v1v1+v f(v)dvf(v1)v for...Ch. 2 - Using the method of the preceding problem,...Ch. 2 - By counting squares in the following figure,...Ch. 2 - Using a numerical integration method such as...Ch. 2 - Find (a) the most probable speed, (b) the average...Ch. 2 - Repeat the preceding problem for nitrogen...Ch. 2 - At what temperature is the average speed of carbon...Ch. 2 - The most probable speed for molecules of a gas at...Ch. 2 - a) At what temperature do oxygen molecules have...Ch. 2 - In the deep space between galaxies, the density of...Ch. 2 - (a) Find the density in SI units of air at a...Ch. 2 - The air inside a hot-air balloon has a temperature...Ch. 2 - When an air bubble rises from the bottom to the...Ch. 2 - (a) Use the ideal gas equation to estimate the...Ch. 2 - One process for decaffeinating coffee uses carbon...Ch. 2 - On a winter day when the air temperature is 0 ,...Ch. 2 - On a warm day when the air temperature is 30 , a...Ch. 2 - (a) People often think of humid air as "heavy."...Ch. 2 - The mean flee path for helium at a certain...Ch. 2 - The mean free path for methane at a temperature of...Ch. 2 - In the chapter on fluid mechanics, Bernoulli's...Ch. 2 - Find the total number of collisions between...Ch. 2 - (a) Estimate the specific heat capacity of sodium...Ch. 2 - A sealed, perfectly insulated container contains...Ch. 2 - Find the ratio f(vp)/f(vrms) for hydrogen gas (...Ch. 2 - Unreasonable results. (a) Find the temperature of...Ch. 2 - Unreasonable results. (a) Find the sped of...Ch. 2 - An airtight dispenser for drinking water is 25 cm...Ch. 2 - Eight bumper cars, each with a mass of 322 kg. are...Ch. 2 - Verify that vp=2kBTm.`Ch. 2 - Verify the normalization equation 0f(v)dv=1 In...Ch. 2 - Verify that v=8kBTm. Make the same scaling...Ch. 2 - Verify that vrms=v2=3kBTm.`
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- please answer the question thanks!arrow_forward5.48 ⚫ A flat (unbanked) curve on a highway has a radius of 170.0 m. A car rounds the curve at a speed of 25.0 m/s. (a) What is the minimum coefficient of static friction that will prevent sliding? (b) Suppose that the highway is icy and the coefficient of static friction between the tires and pavement is only one-third of what you found in part (a). What should be the maximum speed of the car so that it can round the curve safely?arrow_forward5.77 A block with mass m₁ is placed on an inclined plane with slope angle a and is connected to a hanging block with mass m₂ by a cord passing over a small, frictionless pulley (Fig. P5.74). The coef- ficient of static friction is μs, and the coefficient of kinetic friction is Mk. (a) Find the value of m₂ for which the block of mass m₁ moves up the plane at constant speed once it is set in motion. (b) Find the value of m2 for which the block of mass m₁ moves down the plane at constant speed once it is set in motion. (c) For what range of values of m₂ will the blocks remain at rest if they are released from rest?arrow_forward
- 5.78 .. DATA BIO The Flying Leap of a Flea. High-speed motion pictures (3500 frames/second) of a jumping 210 μg flea yielded the data to plot the flea's acceleration as a function of time, as shown in Fig. P5.78. (See "The Flying Leap of the Flea," by M. Rothschild et al., Scientific American, November 1973.) This flea was about 2 mm long and jumped at a nearly vertical takeoff angle. Using the graph, (a) find the initial net external force on the flea. How does it compare to the flea's weight? (b) Find the maximum net external force on this jump- ing flea. When does this maximum force occur? (c) Use the graph to find the flea's maximum speed. Figure P5.78 150 a/g 100 50 1.0 1.5 0.5 Time (ms)arrow_forward5.4 ⚫ BIO Injuries to the Spinal Column. In the treatment of spine injuries, it is often necessary to provide tension along the spi- nal column to stretch the backbone. One device for doing this is the Stryker frame (Fig. E5.4a, next page). A weight W is attached to the patient (sometimes around a neck collar, Fig. E5.4b), and fric- tion between the person's body and the bed prevents sliding. (a) If the coefficient of static friction between a 78.5 kg patient's body and the bed is 0.75, what is the maximum traction force along the spi- nal column that W can provide without causing the patient to slide? (b) Under the conditions of maximum traction, what is the tension in each cable attached to the neck collar? Figure E5.4 (a) (b) W 65° 65°arrow_forwardThe correct answers are a) 367 hours, b) 7.42*10^9 Bq, c) 1.10*10^10 Bq, and d) 7.42*10^9 Bq. Yes I am positve they are correct. Please dont make any math errors to force it to fit. Please dont act like other solutiosn where you vaugley state soemthing and then go thus, *correct answer*. I really want to learn how to properly solve this please.arrow_forward
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