Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 5, Problem 17Q
(¦ Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.)
. According to the First law of
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Only about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up theside of the Empire State Building.
height of Empire State Building, h = 443 m
unit conversion: 1 Cal = 4184 Joules
Problem 1.42. The specific heat capacity of Albertson's Rotini Tricolore is ap-
proximately 1.8 J/g °C. Suppose you toss 340 g of this pasta (at 25°C) into 1.5
liters of boiling water. What effect does this have on the temperature of the water
(before there is time for the stove to provide more heat)?
Some amount of heat energy is removed from a 5cm X 12cm X 37cm block of ice to cool from 0ºC to -24ºC. (Hint: to find mass, use the relation between, density, mass and volume) ((a*2)+(b*1)+(c*2) = 5marks)
Calculate the following:
a) The mas of ice cube in grams
Answer for part 1
(density of ice = 920 kg/m3).
b) The temperature difference in kelvin
Answer for part 2
b) The energy removed from ice in calories
Answer for part 3
. (specific heat of ice = 2093 J/kgºC)
Chapter 5 Solutions
Inquiry into Physics
Ch. 5 - Explain why the Moon and Mercury possess only very...Ch. 5 - The dwarf planet Pluto has an average surface...Ch. 5 - Prob. 1AACh. 5 - Prob. 2AACh. 5 - Discuss some of the early developments in the...Ch. 5 - Prob. 2PIPCh. 5 - In Section 5.2, we discussed the phenomenon of...Ch. 5 - Prob. 2MIOCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 2Q
Ch. 5 - Prob. 3QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 7QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 9QCh. 5 - Prob. 10QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 14QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 18QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 21QCh. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - Prob. 26QCh. 5 - Prob. 27QCh. 5 - Prob. 28QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Prob. 38QCh. 5 - Prob. 39QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 41QCh. 5 - Prob. 42QCh. 5 - Prob. 43QCh. 5 - Prob. 44QCh. 5 - Prob. 45QCh. 5 - Prob. 46QCh. 5 - Prob. 1PCh. 5 - On a nice winter day at the South Pole, the...Ch. 5 - An iron railroad rail is 700 ft long when the...Ch. 5 - A copper vat is 10 m long at room temperature...Ch. 5 - A machinist wishes to insert a steel rod with a...Ch. 5 - An aluminum wing on a passenger is 30 m long when...Ch. 5 - A fixed amount of a particular ideal gas at 16C°...Ch. 5 - em>. The volume of an ideal gas enclosed in a...Ch. 5 - A gas is compressed inside a cylinder (Figure...Ch. 5 - Prob. 10PCh. 5 - . How much heat is needed to raise the temperature...Ch. 5 - Prob. 12PCh. 5 - - (a) Compute the amount of heat needed to raise...Ch. 5 - Prob. 14PCh. 5 - . A 1,200-kg car going 25 m/s is brought to a stop...Ch. 5 - Prob. 16PCh. 5 - Prob. 17PCh. 5 - Prob. 18PCh. 5 - . On a winter day, the air temperature is — 15°C,...Ch. 5 - . On a summer day in Houston, the temperature is...Ch. 5 - . Inside a building, the temperature is 20°C, and...Ch. 5 - . On a hot summer day in Washington, D.C., the...Ch. 5 - . An apartment has the dimensions 10 in 1w 5 in 3...Ch. 5 - Prob. 24PCh. 5 - . The temperature of the air in thermals decreases...Ch. 5 - In cold weather, you can sometimes "see" your...Ch. 5 - . What is the Carnot efficiency of a heat engine...Ch. 5 - . What is the maximum efficiency that a hear...Ch. 5 - . As a gasoline engine is miming, an amount of...Ch. 5 - . A proposed ocean thermal-energy conversion...Ch. 5 - . An irreversible process takes place by which the...Ch. 5 - . The temperature in the deep interiors of some...Ch. 5 - Prob. 1CCh. 5 - Pyrex g1assware is noted for its ability to...Ch. 5 - Prob. 3CCh. 5 - As air rises in the atmosphere, its temperature...Ch. 5 - . 5. If air at 35°C and 77 percent relative...Ch. 5 - Prob. 6C
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- Answer the following by filling the blank: During a bout with the flu, an 80-kg person ran a fever of 39 oC. Consider that the specific heat of any human body is 3470 J/kg K, how much energy does the body need to burn to reach the fever temperature? The answer (in fundamental SI unit) is ___________ (type the numeric value only, dont use scientific notation)arrow_forwardFind the amount of heat that is required to warm 120 kg of water for you bath by 22 ∘C. Express your answer to three significant figures and include the appropriate units. This is all I was given for this problem, so I am also confused. I'm glad your expert is also confused, makes me feel 10X better.arrow_forward...In an experiment, 1 kg of fuel was completely burnt. The heat produced was measured to be 9,000 kJ. a. What will be the head produced for 7 kg of fuel?arrow_forward
- The human body is not perfectly efficient. In fact, only about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up the side of the Empire State Building. height of Empire State Building, h = 443 m unit conversion: 1 Cal = 4184 Joulesarrow_forwardThis exercise uses Newton's Law of Cooling. A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 71°F. (a) If the temperature of the turkey is 150°F after half an hour, what is its temperature after 45 min? (Round your answer to the nearest whole number.) oF (b) After how many hours will the turkey cool to 100°F? (Round your answer to one decimal place.) hr thneted be 0.0it 心)arrow_forwardProblem 1.1. The Fahrenheit temperature scale is defined so that ice melts at 32°F and water boils at 212°F. (a) Derive the formulas for converting from Fahrenheit to Celsius and back. (b) What is absolute zero on the Fahrenheit scale? Problem 1.2. The Rankine temperature scale (abbreviated °R) uses the same size degrees as Fahrenheit, but measured up from absolute zero like kelvin (so Rankine is to Fahrenheit as kelvin is to Celsius). Find the conversion formula between Rankine and Fahrenheit, and also between Rankine and kelvin. What is room temperature on the Rankine scale?arrow_forward
- Problem 2.59. Hot and cold It is common in everyday language to refer to temperatures as "hot" and "cold." Why is this use of language misleading? Does it make sense to say that one body is "twice as hot" as another? Does it matter whether the Celsius or Kelvin temperature scale is used?arrow_forwardA 45-kg person drinks 5.6 × 102 g of milk, which has a caloric value of approximately 3.0 kJ/g. If only 17 percent of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? Enter your answer in scientific notation. Hint: The work done in ascending is given by mgh, where m is the mass (in kg), g is the gravitational acceleration (9.8 m/s2), and h is the height (in meters).arrow_forwardOn a certain dry sunny day, a swimming pool's temperature would rise by 13 C° if not for evaporation. What fraction of the water must evaporate to carry away precisely enough energy to keep the temperature constant? Express your answer in decimal form, to at least two digits after the decimal point.arrow_forward
- How much heat is removed when 100 g of steam at 150◦C is cooled and frozen into 100g of ice at 0◦C. Note that the specific heat of ice is 2, 010 J / kg ·K and the specificheat of liquid water is 4, 186 J / kg ·K.arrow_forwardHeat Q, which has the SI unit of joule (J), is the quantity in mechanical engineering that describes the transit of energy from one location to another. The equation for the flow of heat during the time interval At through an insulated wall is KAAT Q = (Тh — T) where k is the thermal conductivity of the material from which the wall is made, A and L are the wall's area and thickness, and Th – T; is the difference (in degrees Celsius) between the high- and low-temperature sides of the wall. By using the principle of dimensional consistency, what is the correct dimension for thermal conductivity in the SI? The lowercase Greek character kappa (K) is a conventional mathematical symbol used for thermal conductivity. Appendix A summarizes the names and symbols of Greek letters. О a. (W-m)/°C O b. °C/(W. m) O c. (m . °C)/W O d. W/(m . °C)arrow_forwardConsider a cylindrical flask of cross-sectional area A which is fitted with an airtight piston that is free to slide up and down. Contained within the flask is an ideal gas under 130 kPa pressure applied by a mass kept on the piston. The temperature of the system changes from 282 K to 344 K. If the initial height of the piston is 29cm what would be the final height in cm (Do not write unit in the box)? (Please write your answer in the box without rounding and unit. Write what you see on the calculator up to two decimal points. DO NOT WRITE UNIT)arrow_forward
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