A hot cup coffee always cools down when left in room conditions. Would heating of your cup of coffee by extracting energy from the cold air violate the 1st law of Thermodynamics ? Explain very briefly

A hot cup coffee always cools down when left in room conditions. Would heating of your cup of coffee by extracting energy from the cold air violate the 1st law of Thermodynamics ? Explain very briefly

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.34P: 2.34 Show that the temperature distribution in a sphere of radius . made of a homogeneous material...

See similar textbooks

Related questions

Q: A paddle wheel supplies 236 kJ of work to the air contained in a 0.5 m3 insulated rigid volume, the…

Q: Air is contained in a vertical piston-cylinder assembly fitted with an electrical resistor. The…

A: Given:- Assume air as a system then the energy balance is:

Q: in thermodynamics open systems, what does vdP really mean? and can you use it for all energy balance…

A: For any thermodynamic system, there are state variables. And Pressure P and Volume V are two such…

Q: 2 kg of air at 298 K and 120 kPa inside a piston cylinder device is heated to 860 K in an isochoric…

A: Given, m = 2 kg T1 = 298 K P1 = 120 kPa T2 = 860 K T3 = 1200 K Taking cP of air as 1.00 KJ/kg.K

Q: n a piston-cylinder assembly, a gas with an initial pressure of 600 kPa and a volume of 0.05 m 3…

Q: An ice block at -12 oC, and of mass 3kg is completely converted into steam at 120 oC. Determine the…

A: as per expert guidelines we are supposed to answer only the first question of the given multiple…

Q: Q2 : By using a net search and other sources, explain widely & precisely the difference between…

A: THERMODYNAMICS PROPERTIES Thermodynamic characteristics are characterized as characteristic…

Q: Question No 1: An office worker claims that a cup of cold coffee on his table warmed up to 80 C by…

A: In this question an office worker claims that a cup of cold cofee on his table warmed upto the…

Q: How many J of energy must be removed when 187.0 g of steam, at a temperature of 182.0°C, is cooled…

Q: On a summer day in Phoenix, Arizona, the inside room temperature is maintained at 68° F while the…

A: Given, TiF = 68 °FToF = 110 °F Here, o and i subscripts represent outdoor and indoor temperatures…

Q: A 5-kg saturated liquid water contained in a piston-cylinder arrangement at 200 kPa is heated by…

A: In the above question, it is clearly seen that the water is at the saturated state. Half of its mass…

Q: Give atleast 2(two) examples of a thermodynamic system. Identify the working substance of those…

A: Two examples of a thermodynamic system1 Boiler → Boiler is an open…

Q: Air is contained in a piston-cylinder device at 600 kPa and 927°C, and occupies a volume of 0.8 m².…

Q: Q1) A hot cup coffee always cools down when left in room conditions. Would heating of your cup of…

A: According to terms and conditions of bartleby we can only provide 1st solution. Thank you! Yes its…

Q: Baseboard heaters are basically electric resistance heaters and are frequently used in space…

A: The claim of a heater having 100 per cent efficiency conversion certainly violates the law of…

Q: In a closed system, volume changes from 1.5 m3 to 7.5 m3 and heat addition is 200 kJ. Calculate the…

Q: 0.5 kg of an ideal gas undergoes an isentropic process from 657 kPa gage and a volume of 0.017 cubic…

Q: Discuss the application of the first law of thermodynamics to a mountaineer who eats food, gets warm…

A: The first law of thermodynamic is the expression of the conservation of energy principle. The first…

Q: A rigid vessel contains 5 kg of wet steam at 0.4 MPa. After the addition of 9585 kJ the steam has a…

A: Given Data Mass of steam = m =5 Kg Initial pressure of steam = p1=0.4 MPa Final pressure of steam =…

Q: Consider two friends who go to Burger King every day for lunch. One of them orders a Double Whopper…

A: Step 1 Given data Total calories for lunch ordered by friend 1 =1600 Total calories…

Q: -is a thermodynamic process during which the volume of the closed system undergoing such a process…

Q: What is the relation between Bernoulli principle and industrial engineering?

A: In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs…

Q: A piston-cylinder device contains 6 kg of air at 440 kPa and 32°C. During an isothermal expansion…

Q: During a thermodynamics process in an ideal gas with adiabatic exponenty, one third of heat supplied…

Q: List and describe three methods of heat transfer. Give an example of each. (1) Method? Example?…

A: There are three modes of heat transfer.

Q: A 4-m x 5-m X 6-m room is to be heated by a base- board resistance heater. It is desired that the…

Q: An inventor claims to have devised a process using only saturated steam at 100C which by a…

Q: What is the difference between thermodynamic and mechanical work? Should they show equal values in…

A: Thermodynamic work are transient phenomena as it is the result of interface between the surrounding…

Q: An electric immersion heater is put into a sample of water of mass m. The water is heated from its…

A: Given, Water system having mas m. initial temperature of water Ti final temperature of water Tf.…

Q: A room contains 60 kg of air at 100 kPa and 15°C. The room has a 250-W refrigerator (the…

Q: Does the reference point selected for the properties of a substance have any effect on thermodynamic…

A: The thermodynamic properties of a substance are always measured from some reference point. For…

Q: The first law of thermodynamic is dealing with the quality of energy Ture O False O

A: Given Quality of energy To find Thermodynamic law which defines quality of energy

Q: 2 kg of air at 298 K and 120 kPa inside a piston cylinder device is heated to 860 K in an isochoric…

A: Given Data M= 2 kg T1= 298 K T2=860 K T3=1200 K

Q: Thermodynamic. Determine the work needed to compress from V1=30 lt to V2=5 lt a gas applying a…

Q: Define first law of thermodynamics and explain it

A: Solution : DEFINIATION : The first law of thermodynamics states that the total energy of the…

Q: A long roll of 2-m-wide and 0.5-cm-thick 1-Mn manganese steel plate (ρ = 7854 kg/m3 and cp = 0.434…

Q: One mole of an ideal gas is kept in a container at an initial pressure of 2 kPa and temperature…

A: find the ratio of heat and work .

Q: As shown in Fig. below, electronic components mounted on a flat plate are cooled by convection to…

A: Heat supplied is the heat supplied for the power generation or for the useful work of a machine.…

Q: A piston–cylinder device contains 15 kg of air at 599 kPa and 38oC. During a quasi-equilibium…

A: Given conditions , Mass of piston cylinder device = 15 kg Temperature = 38oC Pressure = 599 kPa…

Q: 1 kg of air, initially at 0.4 MPa and 0.4 m³, is expanded isobarically until its volume doubles.…

Q: By combining the first and second laws of thermodynamics, show that: dS = (dU/T) + (PdV/T)

A: according to the given details in the question. We need to combine the first and second laws of…

Q: Q-2/ An office room has an area of 7°5 square meter and 4m height, this room is heated by the…

Q: A piston–cylinder device contains 4 kg of argon at 250 kPa and 35°C. During a quasi-equilibrium,…

A: From the first law of thermodynamics, Qin+Win-Wout=∆U For…

Q: 5. Steam expands quasi-statically and isothermally from 800 kPa and 200C to a final pressure of 200…

A: Given Data The Initial pressure is: Pi=800 kPa The temperature is: T=200°C The final pressure is:…

Q: A long roll of 2-m-wide and 0.5-cm-thick 1-Mn manganese steel plate (ρ = 7854 kg/m3 and cp = 0.434…

Concept explainers

Laws of thermodynamics

Thermodynamics is a field of research, which needs the creation of absolute and ideal states and logical and practical examination of the actual conditions. By considering all the laws and theories of thermodynamics, the chemical reactions, the occurrence of processes, and physiological functions can be predicted with this field.

Question

A hot cup coffee always cools down when left in room conditions. Would heating of your cup of coffee by
extracting energy from the cold air violate the 1st law of Thermodynamics ? Explain very briefly

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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

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, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

I have been reviewing some basic thermodynamic concepts and I was wondering what is the relationship between enthalpy and moving boundary work?
Thermodynamics. Help me out with detailed explanation. 1. Describe in detail the Joule-Thomson experiment. Include in your descriptionthe aim, apparatus, setup, results, relevant formulae and potentialapplication(s) of the experiment. 2. Explain, using appropriate example(s), how does Clausius statement of thesecond law set an upper limit to the thermal efficiency of any heat engine, andto the coefficient of performance of a refrigerator.
What is the difference between thermodynamic and mechanical work? Should they show equal values in an experiment and what possible errors could have caused the difference in values?
in thermodynamics open systems, what does vdP really mean? and can you use it for all energy balance equations for open systems?
Does the reference point selected for the properties of a substance have any effect on thermodynamic analysis? Why?
In thermodynamics, how do you differentiate a closed system with an adiabatic system? What is the difference in the equation used for calculating heat transfer? (If you know a good book or scientific article that contains info regarding this, please include. Thank you.)
Thermodynamic. Determine the work needed to compress from V1=30 lt to V2=5 lt a gas applying a constant pressure of 2.5atm.
On a summer day in Phoenix, Arizona, the inside room temperature is maintained at 68° F while the outdoor air temperature is a sizzling 110° F . What is the outdoor– indoor temperature difference in (a) degrees Fahrenheit, (b) degrees Rankine, (c) degrees Celsius, and (d) kelvin? Is one degree temperature difference in Celsius equal to one temperature difference in kelvin, and is one degree temperature difference in Fahrenheit equal to one degree temperature difference in Rankine? If so, why?
What are the two forms of energy interactions associated with a closed system, explain it?
Consider two identical rooms, one with a 2-kW electric resistance heater and the other with three couples fast dancing. In which room will the air temperature rise more quickly?
Explain the concept of specific heat capacity in thermodynamics and its significance in understanding heat transfer and temperature changes in engineering applications.
Consider a classroom that is losing heat to the outdoors at a rate of 12,000 kJ/h. If there are 40 students in class, each dissipating sensible heat at a rate of 84 W, determine if it is necessary to turn the heater in the classroom on to prevent the room temperature from dropping.