1st Edition

ISBN: 9781938168000

Author: Paul Peter Urone, Roger Hinrichs

Publisher: OpenStax College

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Chapter 13, Problem 8CQ

Does it really help to run hot water over a tight metal lid on a glass jar before flying to open it? Explain your answer.

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Chapter 13, Problem 7CQ

Chapter 13, Problem 9CQ

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Question B3 Consider the following FLRW spacetime: t2 ds² = -dt² + (dx² + dy²+ dz²), t2 where t is a constant. a) State whether this universe is spatially open, closed or flat. [2 marks] b) Determine the Hubble factor H(t), and represent it in a (roughly drawn) plot as a function of time t, starting at t = 0. [3 marks] c) Taking galaxy A to be located at (x, y, z) = (0,0,0), determine the proper distance to galaxy B located at (x, y, z) = (L, 0, 0). Determine the recessional velocity of galaxy B with respect to galaxy A. d) The Friedmann equations are 2 k 8πG а 4πG + a² (p+3p). 3 a 3 [5 marks] Use these equations to determine the energy density p(t) and the pressure p(t) for the FLRW spacetime specified at the top of the page. [5 marks] e) Given the result of question B3.d, state whether the FLRW universe in question is (i) radiation-dominated, (ii) matter-dominated, (iii) cosmological-constant-dominated, or (iv) none of the previous. Justify your answer. f) [5 marks] A conformally…

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Chapter 13 Solutions

College Physics

Ch. 13 - What does it mean to say that two systems are in...Ch. 13 - Give an example of a physical property that varies...Ch. 13 - When a cold alcohol thermometer is placed in a hot...Ch. 13 - If you add boiling water to a cup at room...Ch. 13 - Thermal stresses caused by uneven cooling can...Ch. 13 - Water expands significantly when it freezes: a...Ch. 13 - One method at getting a tight fit, say of a metal...Ch. 13 - Does it really help to run hot water over a tight...Ch. 13 - Liquids and solids expand with increasing...Ch. 13 - Find out the human population of Earth. Is there a...

Ch. 13 - Under what circumstances would you expect a gas to...Ch. 13 - A constant-volume gas thermometer contains a fixed...Ch. 13 - How is momentum related to the pressure exerted by...Ch. 13 - A pressure cooker contains water and steam in...Ch. 13 - Why does condensation from most rapidly on the...Ch. 13 - What is the vapor pressure of solid carbon dioxide...Ch. 13 - Can carbon dioxide be liquefied at room...Ch. 13 - Oxygen cannot be liquefied at room temperature by...Ch. 13 - What is the distinction between gas and vapor?Ch. 13 - Because humidity depends only on water's vapor...Ch. 13 - Why does a beaker of 40.0C water placed in a...Ch. 13 - Why does rubbing alcohol evaporate much more...Ch. 13 - What is me Fahrenheit temperature of a person with...Ch. 13 - Frost damage to most plants occurs at temperatures...Ch. 13 - To conserve energy, room temperatures are kept at...Ch. 13 - A tungsten light bulb filament may operate a1 2900...Ch. 13 - The Surface temperature of the Sun is about 5750...Ch. 13 - One of the honest temperatures ever recorded on...Ch. 13 - (a) Suppose a cold front blows into your locale...Ch. 13 - (a) At what temperature do the Fahrenheit and...Ch. 13 - The height of the Washington Monument is measured...Ch. 13 - How much taller does me Eiffel Tower become at the...Ch. 13 - What is the change in length of a 3.00mlong column...Ch. 13 - How large an expansion gap should be left between...Ch. 13 - You are looking to purchase a small piece of land...Ch. 13 - Global warming will produce rising sea levels...Ch. 13 - Show that 60.0L of gasoline originally at 15.0C...Ch. 13 - (a) Suppose a meter Stick made of steel and one...Ch. 13 - (a) If a 500mL glass beaker is filled to the brim...Ch. 13 - Most automobiles have a coolant reservoir to catch...Ch. 13 - A physicist makes a cup of instant coffee and...Ch. 13 - (a) The density of water at 0C is very nearly...Ch. 13 - Show that 3, by calculating the change in volume V...Ch. 13 - The gauge pressure in your car tires is...Ch. 13 - Convert an absolute pressure of 7.00105N/m2 to...Ch. 13 - Suppose a gasfilled incandescent light bulb is...Ch. 13 - Large helium-filled balloons are used to lift...Ch. 13 - Confirm mat the units of nRT are those of energy...Ch. 13 - In the text, it was shown that N/V=2.681025m3 for...Ch. 13 - Calculate the number of moles in me 2.00L volume...Ch. 13 - An airplane passenger has 100cm3 of air in his...Ch. 13 - (a) What is me 1imlume (in km3) of Avogadro’s...Ch. 13 - An expensive vacuum System can achieve a pressure...Ch. 13 - The number density of gas atoms at a certain...Ch. 13 - A bicycle tire has a pressure of 7.00105N/m2 at a...Ch. 13 - A high—pressure gas cylinder contains 50.13L of...Ch. 13 - Find the number of moles in 2.00L of gas at 35.0C...Ch. 13 - Calculate the depth to which Avogadro's number of...Ch. 13 - (a) What is me gauge pressure in a 25.0C car tire...Ch. 13 - (a) In the deep space between galaxies, me density...Ch. 13 - Some incandescent light bulbs are filled with...Ch. 13 - Average atomic and molecular speeds (vrms) are...Ch. 13 - (a) What is the average kinetic energy in joules...Ch. 13 - The escape velocity of any object from Earth is...Ch. 13 - The escape velocity from the Moon is much smaller...Ch. 13 - Nuclear fusion, the energy source at the Sun,...Ch. 13 - Suppose that the average velocity (vrms) of carbon...Ch. 13 - Hydrogen molecules (molecular mass is equal to...Ch. 13 - Much of The 935 near the Sun is atomic hydrogen....Ch. 13 - There are two important isotopes of uranium 235U...Ch. 13 - Dry air is 78.1% nitrogen. What is the partial...Ch. 13 - (a) What is me vapor pressure of water at 20.0C ?...Ch. 13 - Pressure cookers increase cooking speed by raising...Ch. 13 - (a) At what temperature does water boil at an...Ch. 13 - What is the atmospheric pressure on top of Mt....Ch. 13 - At a spot in the high Andes, water boils at 80.0C,...Ch. 13 - What is the relative humidity on a 25.0C day when...Ch. 13 - What is the density of water vapor in g/m3 on a...Ch. 13 - A deepsea diver should breathe a gas mixture that...Ch. 13 - The vapor pressure of water at 40.0C is...Ch. 13 - Air in human lungs has a temperature of 37.0C and...Ch. 13 - If the relative humidity is 90.0% on a muggy...Ch. 13 - Late on an autumn day, the relative humidity is...Ch. 13 - Atmospheric pressure amp Mt. Everest is...Ch. 13 - What is the dew point (the temperature at which...Ch. 13 - On a certain day the temperature is 25.0C and the...Ch. 13 - Integrated Concepts The boiling point of water...Ch. 13 - Integrated Concepts (a) At what depth in fresh...Ch. 13 - Integrated Concepts To get an idea of the small...Ch. 13 - Integrated Concepts If you want to cook in water...Ch. 13 - Unreasonable Results (a) How many moles per cubic...Ch. 13 - Unreasonable Results (a) An automobile mechanic...Ch. 13 - Unreasonable Results The temperature inside a...Ch. 13 - Unreasonable Results Suppose the relative humidity...

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