Answered: While walking you give off 4.0x10^5J of…

While walking you give off 4.0x10^5J of heat and your internal energy decreased by 6.0x10^5 J. How much work have you done while walking?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics

Section17.3: Latent Heat

Problem 17.2QQ

See similar textbooks

Related questions

Q: The heat machine receives 1200 J of heat fvom high-temperature heat source and release the heat of…

Q: If 100 J of heat is added to a system that does 40 J of external work, by how much is the internal…

A: Given Data: The heat energy added is, H = 100 J. The work done is, W = 40 J. Let ∆E be the change…

Q: The temperature of 2.27 kg of air is decreased from 148.9oC to 4.44oC while the pressure is…

Q: Suppose a certain heat engine has an efficiency of 25%. In order for this heat engine to do 450 J of…

A: Given data: The efficiency of engine is η=25%=0.25. The work done by engine is W=450 J.

Q: A swimmer does 7.7 * 105J of work and gives off 3.9 * 105J ofheat during a workout. Determine ∆U, W,…

A: By swimming , swimmer losses heat, so Q=-3.9×105 J A swimmer does 7.7×105 J so, W=7.7×105 J

Q: A model steam engine of 1.00 kg mass pulls eight cars of 1.00 kg mass each. The cars start from rest…

Q: Rocky spends all the afternoon hours watching sports on cable TV. In the process, he does 1118 J of…

A: Rocky spends all the afternoon hours watching sports on cable TV. In the process, he does 1118 J of…

Q: A system does 2.00 x 10° ) of work while 6.20 x 10 ) of heat transfer occurs to the environment.…

A: Given : Work done by the system (W) = 2 x 108 J Heat transfer to the environment (Q) = -6.2 x 108 J…

Q: Calculate the net work output (in J) of a heat engine following path ABCDA in the figure, where V, =…

Q: A worker drives a 0.500 kg spike into a rail tie with a 2.50 ksledgehammer. The hammer hits the…

A: The expression for kinetic energy (KE) KE = 12× Mass (m) × {speed (v)}2

Q: Rocky spends all the afternoon hours watching sports on cable TV. In the process, he does 1,179 J of…

Q: The kinetic and potential energy of an object as it moves along the x axis is represented by the…

A: Given: Energy vs distance graph is given: From x = 0 m to x = 100 m, Work done on the object = 3…

Q: A system does 1.95 × 108 J of work while 7.5 × 108 J of heat is transferred from the system to the…

A: Given data: Work done by the system (W) = 1.95×108 J Heat transferred from the system to the…

Q: During running, you lost 4.0×104 J of heat, and your internal energy also decreased by 1.6×105 J.…

A: Change in Internal energy, ∆U=-1.6×105J Heat lost, Q=-4.0×104J

Q: A 62.0 kg skier is moving at 6.90 m/s on a frictionless, horizontal, snow-covered plateau when she…

A: The given values are, m=62.0 kgvi=6.90 m/sL=4.80 mμk=0.300h=2.50 m

Q: A system does 1.80×108 J of work while 7.50×108J of heat transfer occurs to the environment. What is…

A: The work done by a given system is, The amount of heat transferred from the system to the…

Q: What work done on the system if the change in internal energy results to - 300j when the system…

A: To determine: The work done on the system Given: Change in internal energy, ∆U=-300 J Heat…

Q: Which condition results to work done greater than the change in internal energy? ΔU > 0; ΔS >…

Q: If the net work is 89 kJ and the efficiency is 61% how much heat is added in the system? O 145.98 kJ…

A: When we are transferring energy or doing some work then all of the work does not go into the system.…

Q: Is the efficiency of a heat engine more in hilly areas than in the plains? Why?

A: Efficiency of heat engines depend on source and sink temperatures. η=1-TsinkTSourceFrom the above…

Q: An ideal heat engine operates between 177 degree C and 27 degree C. If the engine takes 5*1000000 J…

Q: In moving out of a dormitory at the end of the semester, a student does 2.12x 104 J of work. In the…

A: according to 2md law of thermodynamics Q = W + U Q = heat given to the system W = work done b…

Q: When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is released.…

A: given, When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is…

Q: It is important for the body to be able to cool itself even during moderate exercise. Suppose a 70kg…

Q: Constants A crate of fruit with a mass of 32.5 kg and a specific heat capacity of 3650 J/(kg K)…

A: Mass of crate (m) = 32.5 kg Specific heat of crate (C) = 3650 Jkg-CDistance moved (d) = 8.80 m Angle…

Q: 500 J of work are done on a system in a process that decreases the system's thermal energy by 300 J…

Q: You push a 33-kg table across a 6.2-m-wide room. In the process, 1.5 kJ of mechanical energy gets…

A: the expression for mechanical energy is

Q: A heat engine operating between energy reservoirs at 20°C and 600°C has 30% of the maximum possible…

Q: A heat engine does 4.6 × 107 J of work when supplied 8.9 × 107 J. What is its efficiency?

A: The efficiency be given as, Where, W be defined as work. Q be defined as the heat supplied.

Q: A heat engine is involved with exchange of heat of 1915 J, - 40 J, +125 J and - Q J, during one…

Q: 8000 J of heat from a hot reservoir is put into a reversible (Carnot) heat engine whose hot and cold…

Q: A 150J of energy is added to a system that does 50J of work. By how much will the internal energy of…

A: Answer:- Given Energy was added to the system (Q) = +150 J Work done by the system (W) = + 50 J…

Q: Do you do work on the outside world when you rub your hands together to warm them? What is the…

A: When you rub both hands together heat is generated due to friction. You have to work to overcome…

Q: In cooling down milk, the internal energy changes by -400 J. If -450 J of heat was absorbed by the…

Q: If a machine does 74.76 kJ of work after an input of 88.36 kJ of heat, what is the change in…

Q: a motor that absorbs 2500 J of heat while doing 1700 J of work. What is thechange in the motor’s…

Q: internal energy

Q: In moving out of a dormitory at the end of the semester, a student does 1.82 x 104 J of work. In the…

A: Given Work done, W=1.82×104J Internal energy, ∆U=4.07×104J

Concept explainers

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.

Question

While walking you give off 4.0x10^5J of heat and your internal energy decreased by 6.0x10^5 J. How much work have you done while walking?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

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

(a) How long will the energy in a 1470kJ (350kcal) cup of yogurt last in a woman doing work at the rate of 150 W with an efficiency of 20.0% (such as in leisurely climbing stairs)? (b) Does the time found in part (a) imply that it is easy to consume more food energy than you can reasonably expect to work off with exercise?
(a) Calculate the energy in kJ used by a 55.0-kg woman who does 50 deep knee bends in which her center of mass is lowered and raised 0.400 m. (She does work in both directions.) You may assume her efficiency is 20%. (b) What is the average power consumption rate in watts if she does this in 3.00 min?
Consider these scenarios and state whether work is done by the system on the environment (SE) or by the environment on the system (ES): (a) opening a carbonated beverage; (b) filling a flat tire; (c) a sealed empty gas can expands on a hot day, bowing out the walls.
(a) What is the average metabolic rate in watts of a man who metabolizes 10,500 kJ of feed energy in one day? (b) What is the maximum amount of work in joules he can do without breaking down fat, assuming a maximum eficiency of 20.0%? (c) Compare his work output with the daily output of a 187W (0.250horsepower) motor.
In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using only his teeth. (a) How much work did Arfeuille do on the object? (b) What magnitude force did he exert on the object during the lift, assuming the force was constant?
A heat pump used for heating shown in Figure P18.25 is essentially an air conditioner installed backward. It extracts energy from colder air outside and deposits it in a warmer room. Suppose the ratio of the actual energy entering the room to the work done by the devices motor is 10.0% of the theoretical maximum ratio. Determine the energy entering the room per joule of work done by the motor given that the inside temperature is 20.0C and the outside temperature is 5.00C. Figure P18.25