College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Question
Chapter 12, Problem 53P
To determine
The number of breaths per minute for a person to satisfy his need while resting, while standing and walking, when 21% oxygen is present in the air. Also, mention the assumptions.
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✔ Question 6
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Question 8
Question 9
Density of water
= 1 lb₂
= 1 g/cm³
= 1000 kg/m³
= 62.4 lb/ft³
= 1.94 slug/ft³
Print
Done
K
During processing, a polymer is pumped through the plant. The pump must produce enough power to move the material a height of 10 meters [m] at a volumetric flowrate of 0.2 cubic meters per second [m³/s]. Assume
the specific gravity of the polymer is 0.6262. If the pump is 75% efficient, what is the power rating on the pump (input power) to supply the necessary potential energy in units of horsepower [hp]?
Click the icon to view the table of common derived units in the Sl system.
Click the icon to view the conversion table.
Click the icon to view density of water.
The power rating is
hp. (Round your answer to one dicimal place.)
- X ore Info
Length
1 m = 3.28 ft
1 km = 0.621 mi
1 in = 2.54 cm
1 mi = 5,280 ft
1 yd = 3 ft
Force
1 N = 0.225 lb,
Print
Power
1 W = 3.412 BTU/h
= 0.00134 hp
= 14.34 cal/min
= 0.7376 ft lb/s
Done
X
More Info…
For a substance with a diffusion coefficient (D) of 1 x 10E-5 cm2.s-1, what is the diffusion time along a path of 1
micrometer (um), a distance that is roughly the length of a bacterial cell? (Remember that x2 = 2Dt.)
A. 5 ms
B. 50 ms
C. 0.5 ms
D. 500 ms
O E. 500 s
Part A
Estimate the time needed for a glycine molecule (see Table 13-4 in the textbook) to diffuse a distance of 20 um in water at 20 "Cirts concentration varies over that
distance from 1.05 mol/m' to 0.42 mol/m
Express your answer to two significant figures and include the appropriate units.
HA
312
S
Submit
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Chapter 12 Solutions
College Physics
Ch. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - Prob. 3RQCh. 12 - Review Question 12.4 Ken says that the temperature...Ch. 12 - Review Question 12.5 What is the difference...Ch. 12 - Prob. 6RQCh. 12 - Prob. 7RQCh. 12 - Review Question 12.8 How do we know that the Sun’s...Ch. 12 - Prob. 1MCQCh. 12 - Prob. 2MCQ
Ch. 12 - Prob. 3MCQCh. 12 - Prob. 4MCQCh. 12 - Prob. 5MCQCh. 12 - Prob. 6MCQCh. 12 - Prob. 7MCQCh. 12 - Prob. 8MCQCh. 12 - 9. How might physicists have come to know that at...Ch. 12 - 10. A cylindrical container is filled with a gas....Ch. 12 - Prob. 11MCQCh. 12 - A completely closed rigid container of gas is...Ch. 12 - Prob. 13MCQCh. 12 - Prob. 14MCQCh. 12 - Prob. 15MCQCh. 12 - Which of the following conditions are crucial for...Ch. 12 - Prob. 17CQCh. 12 - 18. Why does it hurt to walk barefoot on gravel?
Ch. 12 - 19. In the magic trick in which a person lies on a...Ch. 12 - What does it mean if the density of a gas is 1.29...Ch. 12 - How many oranges would you have if you had two...Ch. 12 - 22. Imagine that you have an unknown gas. What...Ch. 12 - Prob. 23CQCh. 12 - Describe how temperature and one degree are...Ch. 12 - Why does sugar dissolve faster in hot tea than in...Ch. 12 - 26. (a) Describe experiments that were used to...Ch. 12 - Give three examples of diffusion that are...Ch. 12 - Why do very light gases such as hydrogen not exist...Ch. 12 - Prob. 29CQCh. 12 - Explain why Earth has almost no free hydrogen in...Ch. 12 - What are the molar masses of molecular and atomic...Ch. 12 - Prob. 2PCh. 12 - The average particle density in the Milky Way...Ch. 12 - * (a) What is the concentration (number per cubic...Ch. 12 - Prob. 5PCh. 12 - 6. You find that the average gauge pressure in...Ch. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - 10. You have five molecules with the following...Ch. 12 - 11.Two gases in different containers have the same...Ch. 12 - 12. Four molecules are moving with the following...Ch. 12 - m2, what is the average pressure of the 10 tennis...Ch. 12 - * Friends throw snowballs at the wall of a...Ch. 12 - Prob. 15PCh. 12 - Prob. 16PCh. 12 - Prob. 17PCh. 12 - Air consists of many different molecules, for...Ch. 12 - Prob. 19PCh. 12 - 20. Air is a mixture of molecules of different...Ch. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - 23. ** A molecule moving at speed collides...Ch. 12 - Prob. 24PCh. 12 - Prob. 25PCh. 12 - * Even the best vacuum pumps cannot lower the...Ch. 12 - Prob. 27PCh. 12 - Prob. 28PCh. 12 - * The following data were collected for the...Ch. 12 - Prob. 30PCh. 12 - Prob. 31PCh. 12 - 32. * When surrounded by air at a pressure of 1.0...Ch. 12 - 33. * Some students are given the following...Ch. 12 - 34. ** You have gas in a container with a movable...Ch. 12 - Prob. 35PCh. 12 - * Bubbles While snorkeling, you see air bubbles...Ch. 12 - Prob. 37PCh. 12 - * Mount Everest (a) Determine the number of...Ch. 12 - Prob. 39PCh. 12 - Prob. 40PCh. 12 - Prob. 41PCh. 12 - 42. * Car tire dilemma Imagine a car tire that...Ch. 12 - 43. * There is a limit to how much gas can pass...Ch. 12 - Prob. 44PCh. 12 - Prob. 45PCh. 12 - 46. * In the morning, the gauge pressure in your...Ch. 12 - ** The P-versus-T graph in Figure P12.49 describes...Ch. 12 - ** The V-versus-T graph in Figure P12.50 describes...Ch. 12 - Prob. 51PCh. 12 - Prob. 52PCh. 12 - Prob. 53PCh. 12 - 55. ** A gas that can be described by the ideal...Ch. 12 - * Equation Jeopardy 3 The three equations below...Ch. 12 - Prob. 57GPCh. 12 - 58. * See the previous problem Explain how the...Ch. 12 - Prob. 59GPCh. 12 - Prob. 60GPCh. 12 - Prob. 61GPCh. 12 - Prob. 62GPCh. 12 - 63. EST * Car engine During a compression stroke...Ch. 12 - * How can the pressure of air in your house stay...Ch. 12 - 65 * Tell-all problem Tell everything you can...Ch. 12 - 66. ** Two massless, frictionless pistons are...Ch. 12 - 67. * A closed cylindrical container is divided...Ch. 12 - Prob. 68GPCh. 12 - 69. ** The speed of sound in an ideal gas is given...Ch. 12 - 70. * Using the information from problem 12.69,...Ch. 12 - Prob. 71GPCh. 12 - 73. Why is the wall tension in capillaries so...Ch. 12 - Prob. 74RPPCh. 12 - Prob. 75RPPCh. 12 - As a person ages, the fibers in arteries become...Ch. 12 - Prob. 77RPPCh. 12 - The bag and pump have a 6.76-kg mass. The volume...Ch. 12 - The bag and pump have a 6.76-kg mass. The volume...Ch. 12 - The bag and pump have a 6.76-kg mass. The volume...Ch. 12 - The bag and pump have a 6.76-kg mass. The volume...Ch. 12 - Prob. 82RPP
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- (a) Calculate the number of cells in a hummingbird assuming the mass of an average cell is ten times the mass of a bacterium. (b) Making the same assumption, how many cells are there in a human?arrow_forwardUnreasonable Results (a) How many moles per cubic meter of an ideal gas are there at a pressure of 1.001014N/m2 and at 0C ? (b) What is unreasonable about this result? (c) Which premise or assumption is responsible?arrow_forwardLearning Goal: To understand the meaning and the basic applications of pV diagrams for an ideal gas. As you know, the parameters of an ideal gas are described by the equation PV = nRT, where p is the pressure of the gas, V is the volume of the gas, n is the number of moles, R is the universal gas constant, and I is the absolute temperature of the gas. It follows that, for a portion of an ideal gas, PV = constant. One can see that. if the amount of aas remains Figure ЗРО 2po Po Vo 4 6 2V 3V V 1 of 1 ▼ Calculate the work W done by the gas during process 1-3→6. Express your answer in terms of po and Vo. W = 4po Vo Submit ✓ Correct Part E Calculate the work W done by the gas during process 2→6. Express your answer in terms of po and Vo. VE ΑΣΦ W = Previous Answers Submit Provide Feedback Request Answer Part F Complete previous part(s) Part G Complete previous part(s) ?arrow_forward
- C3-CRT35: PRESSURE-VOLUME GRAPH-PRESSURE, VOLUME, AND TEMPERATURE BAR CHARTS An ideal gas trapped in a cylinder expands while its pressure drops. The starting point for this process is labeled A and the endpoint is labeled B in the graph of pressure versus volume. 0 Explain your reasoning. Pressure 0 A Volume This initial pressure, volume, and temperature are shown in the histograms. Complete the histograms, showing the final pressure, volume, and absolute temperature. Initial Final Initial Final Volume B Pressure Initial Final Temperaturearrow_forwardQUESTION 1 A key result from the kinetic theory of ideal gases is a calculation of the pressure of the gas in terms of the average kinetic energy of translation indicates the average value. As we will learn, particles in a gas have a range of velocities, so angle brackets indicate an average over the different velocities. The result from kinetic theory expresses the pressure p in terms of the average kinetic energy Now for the Question: A room is filled with an ideal gas at a temperature T= 362 K and pressure p = 2 atmospheres (abbreviated atm). The dimensions of the room are 8 m x 8 m x 7 m. Note that 1 atm = 1.013 x 10° Pa, where a pascal (Pa) is aNm (Newton, not number, per meter squared). Calculate the total translational energy, Utrans, of the N molecules in the room, where Utrans = Narrow_forwardLearning Goal: To understand the meaning and the basic applications of pV diagrams for an ideal gas. As you know, the parameters of an ideal gas are described by the equation PV = nRT, where p is the pressure of the gas, V is the volume of the gas, n is the number of moles, R is the universal gas constant, and I is the absolute temperature of the gas. It follows that, for a portion of an ideal gas, PV = constant. pV T One can see that if the amount of aas remains Figure ЗРО 2po Po 51 Vo 6 2V 3V < 1 of 1 V A W = 2po Vo Submit ✓ Correct ▼ Part D Previous Answers Calculate the work W done by the gas during process 1-3-6. Express your answer in terms of po and Vo. W = 1 1 119225 Templates Symbols undo redo reset keyboard shortcuts ΑΣΦΑ / Submit Request Answer Part E Complete previous part(s) Part F Complete previous part(s) Part G Complete previous part(s) ! L (arrow_forwardLearning Goal: To understand the meaning and the basic applications of pV diagrams for an ideal gas. As you know, the parameters of an ideal gas are described by the equation PV = nRT, where p is the pressure of the gas, V is the volume of the gas, n is the number of moles, R is the universal gas constant, and I is the absolute temperature of the gas. It follows that, for a portion of an ideal gas, Figure 3po 2po Po pV T 51 Vo = constant. 6 2V 3V V Submit ✓ Correct No work is done during a process, if the gas does not experience a change in volume. The absolute value of the work done by the gas during a cycle (a process in which the gas returns to its original state) equals the area of the loop corresponding to the cycle. One must be careful, though, in judging whether the work done by the gas is positive or negative. One way to determine the total work is to calculate directly the work done by the gas during each step for the cycle and then add the results with their respective…arrow_forwardQ1. А: - Ideal gases in a closed container initially have volume V and pressure P. If the final pressure is 4P and the volume is kept constant. What is the ratio of the initial kinetic energy with the final kinetic energy?arrow_forwardLearning Goal: To understand the meaning and the basic applications of pV diagrams for an ideal gas. As you know, the parameters of an ideal gas are described by the equation PV = nRT, where p is the pressure of the gas, V is the volume of the gas, n is the number of moles, R is the universal gas constant, and T is the absolute temperature of the gas. It follows that, for a portion of an ideal gas, Figure 3po 2po Po pV T 51 = constant. 6: Vo 2V 3V V 1 of 1 ▼ Calculate the work W done by the gas during process 1-2-6-51. Express your answer in terms of po and Vo. W = 4po Vo Submit ✓ Correct This result can be obtained either by calculating the area of the region 1265 or by adding the amounts of work done by the gas during each process of the cycle. The latter method helps verify that the net work done by the gas is, indeed, positive. As discovered earlier, The work W15621 done during a process 1-5-6-2-1 is equal to -W12651, the work done during the reverse process 1-2 →65 →1. Part G…arrow_forwarda.) An ideal gas is in a sealed container. By what factor does the gas temperature change if the volume is halved and the pressure is tripled? b.) An ideal gas is in a sealed container. By what factor does the gas temperature change if the volume is doubled and the pressure is tripled? c.) If you have two jars containing the same amount, n1=n2, and type of gas (for example, oxygen) and they are at the same temperature, T, what can you say about their pressure if the first jar has four times the volume of the second, V1 = 4V2? Hint: use pV=nRTarrow_forward1) Students are studying the behavior of a gas in a closed system. They conducted this experiment. 1. Remove the end cap from the tip of a 35-mL plastic syringe. 2. Remove plunger from the syringe and insert a small marshmallow into the syringe. 3. Place plunger back in syringe so the volume reading is approximately at the 15-mL mark. 4. Place a syringe tip cap over the tip of the syringe. 5. Pull the plunger out. What is the BEST description of what will happen when the plunger is pulled out? The marshmallow will expand because the volume A) inside the syringe has increased. As the pressure increased in the syringe the volume B) of the syringe and the marshmallow increased. The marshmallow expands because the volume has increased and the pressure inside the syringe has C) decreased. There is a direct relationship between volume and pressure so as the volume increases the pressure D) increases. The marshmallow shrinks.arrow_forwardLearning Goal: To understand the meaning and the basic applications of PV diagrams for an ideal gas. As you know, the parameters of an ideal gas are described by the equation PV = nRT, where p is the pressure of the gas, V is the volume of the gas, n is the number of moles, R is the universal gas constant, and T is the absolute temperature of the gas. It follows that, for a portion of an ideal gas, One can see that, if the amount of gas remains constant, it is impossible to change just one parameter of the gas: At least one more parameter would also change. For instance, if the pressure of the gas is changed, we can be sure that either the volume or the temperature of the gas (or, maybe, both!) would also change. To explore these changes, it is often convenient to draw a graph showing one parameter as a function of the other. Although there are many choices of axes, the most common one is a plot of pressure as a function of volume: a pV diagram. Figure pV T In this problem, you will be…arrow_forwardarrow_back_iosarrow_forward_ios
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