Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)

5th Edition

ISBN: 9780137488179

Author: Douglas Giancoli

Publisher: PEARSON+

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Textbook Question

Chapter 20, Problem 20Q

Two identical systems are taken from state a to state b by two different irreversible processes. Will the change in entropy for the system be the same for each process? For the environment? Answer carefully and completely.

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Chapter 20, Problem 19Q

Chapter 20, Problem 21Q

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Race car driver is cruising down the street at a constant speed of 28.9 m/s (~65 mph; he has a “lead” foot) when the traffic light in front of him turns red. a) If the driver’s reaction time is 160 ms, how far does he and his car travel down the road from the instant he sees the light change to the instant he begins to slow down? b) If the driver’s combined reaction and movement time is 750 ms, how far do he and his car travel down the road from the instant he sees the light change to the instant he slams on her brakes and car begins to slow down? Please answer parts a-B. Show all work. For each question draw a diagram to show the vector/s. Show all the step and provide units in the answers. Provide answer to 2 decimal places. DONT FORGET TO DRAW VECTORS! ONLY USE BASIC FORMULAS TAUGHT IN PHYSICS. distance = speed * time.

Race car driver is cruising down the street at a constant speed of 28.9 m/s (~65 mph; he has a “lead” foot) when the traffic light in front of him turns red. a) If the driver’s reaction time is 160 ms, how far does he and his car travel down the road from the instant he sees the light change to the instant he begins to slow down? b) If the driver’s combined reaction and movement time is 750 ms, how far do he and his car travel down the road from the instant he sees the light change to the instant he slams on her brakes and car begins to slow down? c) If the driver’s average rate of acceleration is -9.5 m/s2 as he slows down, how long does it take him to come to a stop (use information about his speed of 28.9 m/s but do NOT use his reaction and movement time in this computation)? Please answer parts a-c. Show all work. For each question draw a diagram to show the vector/s. Show all the step and provide units in the answers. Provide answer to 2 decimal places unless stated otherwise.…

How is it that part a is connected to part b? I can't seem to solve either part and don't see the connection between the two.

Chapter 20 Solutions

Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)

Ch. 20.3 - Prob. 1AE Ch. 20.9 - Prob. 1DE Ch. 20 - Prob. 1Q Ch. 20 - Can you warm a kitchen in winter by leaving the...Ch. 20 - Would a definition of heat engine efficiency as e...Ch. 20 - Prob. 4Q Ch. 20 - Prob. 5Q Ch. 20 - The oceans contain a tremendous amount of thermal...Ch. 20 - Discuss the factors that keep real engines from...Ch. 20 - Prob. 8Q

Ch. 20 - Describe a process in nature that is nearly...Ch. 20 - (a) What happens if you remove the lid of a bottle...Ch. 20 - Prob. 11Q Ch. 20 - Prob. 12Q Ch. 20 - Give three examples, other than those mentioned in...Ch. 20 - Which do you think has the greater entropy, 1 kg...Ch. 20 - Prob. 16Q Ch. 20 - Prob. 17Q Ch. 20 - The first law of thermodynamics is sometimes...Ch. 20 - Powdered milk is very slowly (quasistatically)...Ch. 20 - Two identical systems are taken from state a to...Ch. 20 - It can he said that the total change in entropy...Ch. 20 - Prob. 22Q Ch. 20 - Prob. 23Q Ch. 20 - Prob. 1MCQ Ch. 20 - Prob. 2MCQ Ch. 20 - Prob. 3MCQ Ch. 20 - Prob. 4MCQ Ch. 20 - Prob. 5MCQ Ch. 20 - Prob. 6MCQ Ch. 20 - Prob. 7MCQ Ch. 20 - Prob. 8MCQ Ch. 20 - Prob. 9MCQ Ch. 20 - Prob. 10MCQ Ch. 20 - Prob. 11MCQ Ch. 20 - Prob. 12MCQ Ch. 20 - Prob. 1P Ch. 20 - Prob. 2P Ch. 20 - Prob. 3P Ch. 20 - (II) A typical compact car experiences a total...Ch. 20 - Prob. 5P Ch. 20 - (II) Figure 2017 is a PV diagram for a reversible...Ch. 20 - Prob. 7P Ch. 20 - Prob. 8P Ch. 20 - Prob. 9P Ch. 20 - Prob. 10P Ch. 20 - (II) (a) Show that the work done by a Carnot...Ch. 20 - Prob. 12P Ch. 20 - Prob. 13P Ch. 20 - Prob. 14P Ch. 20 - (II) Assume that a 65 kg hiker needs 4.0 103 kcal...Ch. 20 - Prob. 16P Ch. 20 - Prob. 18P Ch. 20 - (III) A Carnot cycle, shown in Fig. 20-7, has the...Ch. 20 - (III) One mole of monatomic gas undergoes a Carnot...Ch. 20 - (III) In an engine that approximates the Otto...Ch. 20 - Prob. 22P Ch. 20 - Prob. 23P Ch. 20 - Prob. 24P Ch. 20 - Prob. 25P Ch. 20 - Prob. 26P Ch. 20 - Prob. 27P Ch. 20 - Prob. 28P Ch. 20 - (II) An ideal heal pump is used to maintain the...Ch. 20 - Prob. 30P Ch. 20 - Prob. 31P Ch. 20 - Prob. 32P Ch. 20 - Prob. 33P Ch. 20 - Prob. 34P Ch. 20 - Prob. 35P Ch. 20 - (I) What is the change in entropy of 1.00 m3 of...Ch. 20 - Prob. 37P Ch. 20 - (II) If 0.45kg f water at 100C is changed by a...Ch. 20 - Prob. 39P Ch. 20 - Prob. 40P Ch. 20 - Prob. 41P Ch. 20 - Prob. 42P Ch. 20 - Prob. 43P Ch. 20 - Prob. 44P Ch. 20 - Prob. 45P Ch. 20 - Prob. 46P Ch. 20 - Prob. 47P Ch. 20 - (II) An ideal gas of n moles undergoes the...Ch. 20 - Prob. 49P Ch. 20 - Prob. 50P Ch. 20 - (II) Two samples of an ideal gas are initially at...Ch. 20 - (II) 1.00 mole of nitrogen (N2) gas and 1.00 mole...Ch. 20 - (II) (a) Why would you expect the total entropy...Ch. 20 - (II) Thermodynamic processes are sometimes...Ch. 20 - Prob. 55P Ch. 20 - (III) Consider an ideal gas of n moles with molar...Ch. 20 - (III) A general theorem states that the amount of...Ch. 20 - Prob. 58P Ch. 20 - (I) Use Eq. 2014 to determine the entropy of each...Ch. 20 - (II) Suppose that you repeatedly shake six coins...Ch. 20 - (II) (a) Suppose you have four coins, all with...Ch. 20 - Prob. 62P Ch. 20 - Prob. 63P Ch. 20 - Prob. 64P Ch. 20 - Prob. 65P Ch. 20 - Prob. 66P Ch. 20 - Prob. 67GP Ch. 20 - Prob. 68GP Ch. 20 - A heat engine takes a diatomic gas around the...Ch. 20 - Prob. 70GP Ch. 20 - Prob. 71GP Ch. 20 - Prob. 72GP Ch. 20 - The operation of a certain heat engine takes an...Ch. 20 - Prob. 74GP Ch. 20 - Prob. 75GP Ch. 20 - 1.00 mole of an ideal monatomic gas at STP first...Ch. 20 - Prob. 77GP Ch. 20 - Prob. 78GP Ch. 20 - Prob. 80GP Ch. 20 - Prob. 82GP Ch. 20 - The Stirling cycle shown in Fig 20-27, is useful...Ch. 20 - Prob. 84GP Ch. 20 - Prob. 85GP Ch. 20 - Thermodynamic processes can be represented not...Ch. 20 - An aluminum can, with negligible heat capacity, is...Ch. 20 - Prob. 88GP Ch. 20 - A bowl contains a large number of red, orange, and...Ch. 20 - Prob. 90GP Ch. 20 - Prob. 92GP

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Two identical systems are taken from state a to state b by two different irreversible processes. Will the change in entropy for the system be the same for each process? For the environment? Answer carefully and completely.

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