University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 1, Problem 46P
An Associated Press article on climate change said, "Some of the ice shelf 's disappearance was probably during times when the planet was 36 degrees Fahrenheit (2 degrees Celsius) to 37 degrees Fahrenheit (3 degrees Celsius) warmer than it is today." What mistake did the reporter make?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
It is well known that wind makes the cold air feel much colder as a result of the wind chill effect that is due to the increase in the convection heat transfer coefficient with increasing air velocity. The wind chill effect is usually expressed in terms of the wind chill temperature (WCT), which is the apparent temperature felt by exposed skin. For outdoor air temperature of 0°C, for example, the wind chill temperature is 25°C at 20 km/h winds and -9°C at 60 km/h winds. That is, a person exposed to 0°C windy air at 20 km/h will feel as cold as a person exposed to -5°C calm air (air motion under 5 km/h). For heat transfer purposes, a standing man can be modeled as a 30-cm-diameter, 170-cm-long vertical cylinder with both the top and bottom surfaces insulated and with the side surface at an average temperature of 34°C. For a convection heat transfer coefficient of 15 W/m2·K, determine the rate of heat loss from this man by convection in still air at 20°C. What would your answer be if the…
Assume that you are evaluating a building that has a heated slab-on-grade floor with edge insulation of R = 5.0 and a perimeter of 1000 ft. If your design temperature range is 5°F to -5°F, what is the heat loss, in BTU/hr, through the edge of the floor?
62,000 BTU/hr
31,000 BTU/hr
47,000 BTU/hr
23,000 BTU/hr
of the substance? What is the melting temperature? The freezing temperature? The condensation
6. Consider the following warming curve drawn for 0.1 kg of substance. What is the boiling temperature
temperature?
liquid thas
s
Gas
del
Solid + Liquid
URE
TEMP
E
R
A (°C)
T
90-
80
70-
60
50-
40
30-
20
10-
0-
-10-
-20
solid
&
1
0
150
Heat Input (Joules)
Liquid
700
1
900
1
1600
1780
Chapter 1 Solutions
University Physics Volume 2
Ch. 1 - Check Your Understanding Does a given reading on a...Ch. 1 - Check Your Understanding Two objects A and B have...Ch. 1 - Check Your Understanding If 25 kJ is necessary to...Ch. 1 - Check Your Understanding Explain why a cup of...Ch. 1 - Check Your Understanding Why does snow Often...Ch. 1 - Check Your Understanding Name an example from...Ch. 1 - Check Your Understanding How does the rate of heat...Ch. 1 - Check Your Understanding Explain why using a fan...Ch. 1 - Check Your Understanding How much greater is the...Ch. 1 - What does it mean to say that two systems are in...
Ch. 1 - Give an example in which A has some kind of...Ch. 1 - If a thermometer is allowed to come to equilibrium...Ch. 1 - Give an example of a physical property that varies...Ch. 1 - Pouring cold water into hot glass or ceramic...Ch. 1 - One method of getting a tight fit, say of a metal...Ch. 1 - Does it really help to run hot water over a tight...Ch. 1 - When a cold alcohol thermometer is placed in a hot...Ch. 1 - Calculate the length of a 1-meter rod of a...Ch. 1 - Noting the large stresses that can be caused by...Ch. 1 - How is heat transfer related to temperature?Ch. 1 - Describe a situation in which heat transfer...Ch. 1 - When heat transfers into a system, is the energy...Ch. 1 - The brakes in a car increase in temperature by T...Ch. 1 - A pressure cooker contains water and steam in...Ch. 1 - As shown below, which is the phase diagram for...Ch. 1 - Can carbon dioxide be liquefied at room...Ch. 1 - What is the distinction between gas and vapor?Ch. 1 - Heat transfer can cause temperature and phase...Ch. 1 - How does the latent heat of fusion of water help...Ch. 1 - What is the temperature of ice right after it is...Ch. 1 - If you place 0 ice into 0 water in an insulated...Ch. 1 - What effect does condensation on a glass of ice...Ch. 1 - In Miami, Florida, which has a very humid climate...Ch. 1 - In winter, it is often warmer in San Francisco...Ch. 1 - Freeze-dried foods have been dehydrated in a...Ch. 1 - In a physics classroom demonstration, an...Ch. 1 - Mechanisms of Heat Transfer What are the main...Ch. 1 - When our bodies get too warm, they respond by...Ch. 1 - Shown below is a cut-away drawing of a thermos...Ch. 1 - Some electric stoves have a flat ceramic surface...Ch. 1 - Loose-fitting white clothing covering most of the...Ch. 1 - One way to make a fireplace more energy-efficient...Ch. 1 - On cold, clear nights horses will sleep under the...Ch. 1 - When watching a circus during the day in a large,...Ch. 1 - Satellites designed to observe the radiation from...Ch. 1 - Why are thermometers that ale used in weather...Ch. 1 - Putting a lid on a boiling pot greatly reduces the...Ch. 1 - Your house will be empty for a while in cold...Ch. 1 - You pour coffee into an unlidded cup, intending to...Ch. 1 - Broiling is a method of cooking by radiation,...Ch. 1 - On a cold winter morning, why does the metal of a...Ch. 1 - While traveling outside the United States, you...Ch. 1 - What are the following temperatures on the Kelvin...Ch. 1 - (a) Suppose a cold front blows into your locale...Ch. 1 - An Associated Press article on climate change...Ch. 1 - (a) At what temperature do the Fahrenheit and...Ch. 1 - A person taking a reading of the temperature in a...Ch. 1 - The height of the Washington Monument is measured...Ch. 1 - How much taller does the Eiffel Tower become at...Ch. 1 - What is the change in length of a 3.00-cm-long...Ch. 1 - How large an expansion gap should be left between...Ch. 1 - You are looking to buy a small piece of land in...Ch. 1 - Global warming will produce rising sea levels...Ch. 1 - (a) Suppose a meter stick made of steel and one...Ch. 1 - (a) If a 500-mL glass beaker is filled to the brim...Ch. 1 - Most cars have a coolant reservoir to catch...Ch. 1 - A physicist makes a cup of instant coffee and...Ch. 1 - The density of water at 0 C is very nearly 1000...Ch. 1 - Show that =3a , by calculating the infinitesimal...Ch. 1 - Calorimetry On a hot day, the temperature of an...Ch. 1 - To sterilize a 50.0-g glass baby bottle, we must...Ch. 1 - The same heat transfer into identical masses of...Ch. 1 - Rubbing your hands together warms them by...Ch. 1 - A 0.250-kg block of a pule material is heated from...Ch. 1 - Suppose identical amounts of heat transfer into...Ch. 1 - (a) The number of kilocalories in food is...Ch. 1 - Following vigorous exercise, the body...Ch. 1 - In a study of healthy young men[1], doing 20...Ch. 1 - A 1.28-kg sample of water at 10.0 is in a...Ch. 1 - Repeat the preceding problem, assuming the water...Ch. 1 - How much heat transfer (in kilocalories) is...Ch. 1 - A bag containing 0 ice is much more effective in...Ch. 1 - (a) How much heat transfer is required to raise...Ch. 1 - Condensation on a glass of ice water causes the...Ch. 1 - On a trip, you notice that a 3.50-kg bag of ice...Ch. 1 - On a certain dry sunny day, a swimming pool 's...Ch. 1 - (a) How much heat transfer is necessary to raise...Ch. 1 - In 1986, an enormous iceberg broke away from the...Ch. 1 - How many grams of coffee must evaporate from 350 g...Ch. 1 - (a) It is difficult to extinguish a fire on a...Ch. 1 - The energy released from condensation in...Ch. 1 - To help prevent frost damage, 4.00 kg of water at...Ch. 1 - A 0.250-kg aluminum bowl holding 0.800 kg of soup...Ch. 1 - A 0.0500-kg ice cube at 30.0 is placed in 0.400...Ch. 1 - If you pour 0.0100 kg of 20.0 water onto a...Ch. 1 - Indigenous people sometimes cook in watertight...Ch. 1 - What would the final temperature of the pan and...Ch. 1 - (a) Calculate the rate of heat conduction through...Ch. 1 - The rate of heat conduction out of a window on a...Ch. 1 - Calculate the rate of heat conduction out of the...Ch. 1 - Suppose you stand with one foot on ceramic...Ch. 1 - A man consumes 3000 kcal of food in one day,...Ch. 1 - A firewalker runs across a bed of hot coals...Ch. 1 - (a) What is the rate of heat conduction through...Ch. 1 - A warms transfers energy by conduction through its...Ch. 1 - Compare the rate of heat conduction through a...Ch. 1 - Suppose a person is covered head to foot by wool...Ch. 1 - Some stove tops are smooth ceramic for easy...Ch. 1 - One easy way to reduce heating (and cooling) costs...Ch. 1 - Many decisions are made on the basis of the...Ch. 1 - In 1701, the Danish astronomer Ole Rømer proposed...Ch. 1 - What is the percent error of thinking the melting...Ch. 1 - An engineer wants to design a structure in which...Ch. 1 - How much stress is cleated in a steel beam if its...Ch. 1 - A brass rod (Y=90109N/m2), with a diameter of...Ch. 1 - A mercury thermometer still in use for meteorology...Ch. 1 - Even when shut down after a period of normal use,...Ch. 1 - You leave a pastry in the refrigerator on a plate...Ch. 1 - Two solid spheres, A and B, made of the same...Ch. 1 - In some countries, liquid nitrogen is used on...Ch. 1 - Some gun fanciers make their own bullets, which...Ch. 1 - A 0.800-kg iron cylinder at a temperature of...Ch. 1 - Repeat the preceding problem with 2.00 kg of ice...Ch. 1 - Repeat the preceding problem with 0.500 kg of ice,...Ch. 1 - A 30.0-g ice cube at its melting point is dropped...Ch. 1 - (a) Calculate the rate of heat conduction through...Ch. 1 - (a) An exterior wall of a house is 3 m tall and 10...Ch. 1 - For the human body, what is the rate of heat...Ch. 1 - You have a Dewar flask (a laboratory vacuum flask)...Ch. 1 - An infrared heater for a sauna has a surface area...Ch. 1 - (a) Deter-nine the power of radiation from the Sun...Ch. 1 - A pendulum is made of a rod of length L and...Ch. 1 - At temperatures of a few hundred kelvins the...Ch. 1 - In a calorimeter of negligible heat capacity, 200...Ch. 1 - An astronaut performing an extra-vehicular...Ch. 1 - The goal in this problem is to find the growth of...Ch. 1 - As the very first rudiment of climatology,...Ch. 1 - Let's stop ignoring the greenhouse effect and...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Stable isotopes of given elements have to be found based on the isotope graph. Concept introduction: An atom or...
Living By Chemistry: First Edition Textbook
61. A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory shown in Figure P...
College Physics: A Strategic Approach (3rd Edition)
MAKE CONNECTIONS Review the description of meiosis (see Figure 10.8) and Mendels laws of segregation and indepe...
Campbell Biology in Focus (2nd Edition)
Describe an example of bioconversion. What metabolic processes can result in fuels?
Microbiology: An Introduction
How is migration based on circannual rhythms poorly suited for adaptation to global climate change?
Campbell Biology (11th Edition)
5.4 Genes E and H are syntenic in an experimental organism with the genotype . Assume
that during each meiosis,...
Genetic Analysis: An Integrated Approach (3rd Edition)
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
- Suppose that a planet with no atmosphere orbits a Sunlike star at the same radius as the Earth’s orbit and keeps the same face toward the sun at all times. The planet reflects 40% of the light falling on it, and the average temperature on the facing surface is nearly uniform and 185 K larger than the nearly uniform temperature on its back surface. What is the planet’s average temperature? The planet's average planetary temperature is _______ K.arrow_forwardConsider a planet where Solar constant = 1360 W /m2 and albedo =0.30. If n=0, what is the equilibrium surface temperature of the planet? If S increases to 1370 W/m2 and n remains zero, what is the new equilibrium surface temperature? If the planet has a water vapor feedback so that the number of layers n is a function of surface temperature nT = (T – 254.5)/100, what is the equilibrium surface temperature? Considering the answers above, calculate the climate feedback factor g for this planet.arrow_forwardGlobal warming will result in sea level rise. Assume that i) 2/3 or the earth's surface is oceans with average depth of the oceans is 3000m ii) that sea level rise will not result in the increase in the surface area of the oceans iii) that all of the oceans' water is at a the same temperature of 20°C and has (volume) coefficient of thermal expansion of ß = 2 x 10-4 K-¹. How much will the sea level rise for a 3°C rise in the average water temperature? (You should neglects the effects from the ice caps melting due to this temperature rises.)arrow_forward
- On a hot Saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 24°C. At noon the air conditioner is turned off, and the people go home. The temperature outside is a constant 34°C for the rest of the afternoon. If the time constant for the building is 5 hr, what will be the temperature inside the building at 4:00 P.M.? At 6:00 P.M.? When will the temperature inside the building reach 26°C? At 4:00 P.M., the temperature inside the building will be about (Round to the nearest tenth as needed.) 1°C.arrow_forwardOn a hot Saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 24°C. At noon the air conditioner is turned off, and the people go home. The temperature outside is a constant 34°C for the rest of the afternoon. If the time constant for the building is 5 hr, what will be the temperature inside the building at 3:00 P.M.? At 5:00 P.M.? When will the temperature inside the building reach 26°C? RIB °C. At 3:00 P.M., the temperature inside the building will be about (Round to the nearest tenth as needed.)arrow_forwardIf the air temperature is 20C at sea level, then what is the temperature outside a jet aircraft flying at an altitude of 10,000 m?arrow_forward
- Q6/ A spherical tank, 1 m in diameter, is maintained at a temperature of 120 C and exposed to a convection environment. With h=25W/m2.•C and To =15 C, what thickness of urethane foam should be added to ensure that the outer temperature of the insulation does not exceed 40 C? What percentage reduction in heat loss results from installing this insulation?arrow_forward#1. Consider a lake in Vermont at the end of summer. At the end of summer, you can assume the average surface water temperature is about 20 °C and the bottom of the lake is about 10 °C. Explain in detail what happens as the cold air of winter arrives. Be sure to discuss in detail how various heat transfer mechanisms are working.arrow_forwardhave a bucket of icewater with 100 grams of ice and 900 grams of liquid water all at zero degrees Celcius. I throw a hot chunk of iron into it (after which no heat enters or escapes the system), and the final temperature is 100 degrees Celcius with the ice having melted and some of the water actually boiling. The mass of the iron is 316 grams, and its initial temperature is 9,509 degrees Celcius. How many grams of water actually boil? (Don't write the unit, just the number.) You'll need these numbers: Specific heat of water: 4.2 J/g/deg Specific heat of iron: 0.46 J/g/deg Heat of fusion of water: 340 J/g Heat of Vaporization of water: 2300 J/garrow_forward
- The heat index (HI) is an estimate of the temperature felt by the human body based on the actual measured air temperature T (in °F) and relative humidity h.. It is given by HI = – 42.379 +2.049015237 + 10.14333127h, – 0.22475541Th, – (6.83783 × 10-3)T² - (5.481717 x 10-2)h,² + (1.22874 × 10-3)T®h, + (8.5282 · 10-4)Th,² - (1.99 x 10-6)T®h,?. a. If the air temperature in your area is 107°F with a relative humidity of 8%, how hot does your body feel? b. If the air temperature and relative humidity is known to be increasing at a rate of 2°F per sec and 1% per sec, resp., how fast is the heat index changing at the moment when the air temperature in your area is 107°F with a relative humidity of 8%?arrow_forwardA tank of water has been outdoors in cold weather, and a slab of ice 3.5 cm thick has formed on its surface (see the figure). The air above the ice is at -17°C. Calculate the rate of formation of ice (in centimeters per hour) on the ice slab. Take the thermal conductivity of ice to be 0.0040 cal/s-cm-C°, its density to be 0.92 g/cm°, and its latent heat of fusion to be 333 kJ/kg. Assume no energy transfer through the tank walls or bottom. Air Ice Water Number i Unitsarrow_forwardA tank of water has been outdoors in cold weather, and a slab of ice 4.8 cm thick has formed on its surface (see the figure). The air above the ice is at -7.4°C. Calculate the rate of formation of ice (in centimeters per hour) on the ice slab. Take the thermal conductivity of ice to be 0.0040 cal/s-cm-C, its density to be 0.92 g/cm2, and its latent heat of fusion to be 333 kJ/kg. Assume no energy transfer through the tank walls or bottom. Air Ice Water Number i Unitsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY