Is it possible to determine whether a change in internal energy is caused by heat transfer, by work performed, or by a combination of the two?

Q: (a) Rowing your shell to work one day, you give off 4.8 * 105J of heat and do 6.2 * 105J of work.…

A: Using the first law of thermodynamics, we can write, ∆U=q+w where ∆U is the change in internal…

Q: Are internal energy and heat energy the same? Explain.

A: An any system, particles have a certain amount of energy at certain temperature, is known as…

Q: Suppose a woman does 500 ) of work and 9500 J of heat transfer occurs into the environment in the…

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Q: Determine in which case is heat added to the system? (a) ΔU = –43 J, w = 40 J; or (b) ΔU = 31 J, w =…

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Q: If a system has 325 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its…

A: Given:  Work done, W = 325 kcal = 325 x 4.18 kJ = 1358.5 kJ As there are 4.18 J in one cal.  heat…

Q: How much internal energy in Joule is generated when a (1.6100x10^1)-g lead bullet, traveling at…

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Q: A 46-kg woman cheats on her diet and eats a 685-Calorie (685 kcal) jelly doughnut for breakfast.…

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Q: The system gains 159 J of heat, while it does 15 J or work on the surroundings. After a few minutes,…

A: Given data: Heat gain by the system, Q1= 159 J Work done on the surrounding is, ∆W=15 J The heat…

Q: In a process for the production of raw materials for the elaboration of circuits, a gas at 1227 ° C,…

A: For an ideal machine ,we can apply Carnot conditions.

Q: the graph below, each unit on the horizontal axis is 2.20 x 103 m³ and each unit on the vertical…

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Q: A certain heat engine does 11.0 k) of work and 8.50 k) heat transfer occurs to the environment in a…

A: Part A. Work done by an engine is given as follows: W=Q1-Q2 here W is the work done Q1 and Q2 are…

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: A system undergoes a two-step process. In the first step, the internal energy of the system…

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Q: How do heat transfer and internal energy differ? In particular, which can be stored as such in a…

A: The most basic difference between heat transfer Q and internal energy U: It can be easily understood…

Q: If the plant operates at 50.0% of its maximum efficiency and its power output is 1.23 × 108 W, at…

A: The given data are: TH=540 KTL=313 KQH=1.23×108 W Here, TH is the higher temperature, TL is the…

Q: For objects at thermal equilibrium, Internal energy is the same between them.   TRUE OR FALSE?…

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Q: The tea in a cup of tea has a temperature of 50 degree celsius and a certain internal energy. If all…

A: mass = p*v ∆Q = ms∆T         =ρVS∆T                                        S =   specific heat…

Q: When an ideal is subjected to an isothermal process, (a) now work is done by the system (b) no heat…

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Q: What is wrong with the claim that a cyclical heat engine does 4.00 kJ of work on an input of 24.0 kJ…

A: Energy conservation law states that Energy can never be created or destroyed, it can only be…

Q: A 60 kg woman cheats on her diet and eats a 493 Calorie (493 kcal) jelly donut for breakfast. (a)…

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Q: (a) How many joules of energy are the equivalent of one jelly doughnut? (b) How many stairs must the…

A: The weight of the woman is w=58 kg. The woman eats 555 kcal.

Q: Problem 12: A system does 1.9 × 108 J of work while 5.5 x 108 J of heat is transferred from the…

A: Given : Work done (W) = 1.9 x 108 Joule  Heat transferred (Q) = - 5.5 x 108 Joule ..... (Negative…

Q: In an industrial process, a gas phase refrigerant reduces its internal energy by 70 kJ by means of a…

A: Given data dU=-70 kJWin=-20 kJWout=+100 kJ

Q: Can you warm a kitchen by leaving the door of a hot oven open? Explain.

A: Yes. It is possible to warm the kitchen by leaving the door of a hot oven open.

Q: The average mpg rating for an older model of a car is 24.8 miles to the gallon and it takes 7.00x105…

A: A gallon of gasoline= 1.19 x 108J   Internal energy used for 1 mile  = 1.19*10824.3=4.89 x 106J Work…

Q: A 46-kg woman cheats on her diet and eats a 555-Calorie (555 kcal) jelly doughnut for breaktast. (a)…

A: In this question it is given that a woman with weight 46 kg  is on dieting she cheats her diet and…

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: When gasoline burns in an automobile engine, the heat released (336 J) causes the products CO2 and…

A: ΔU=?q=-336 JW=-463 J

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

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Q: Give the change in internal energy of a system if(a) W = 50 J, Q = 50 J; (b) W = -50 J, Q = -50 J;…

A: Step 1: Part (a) Given: The work done is W=50 J. The heat is Q=50 J. The expression for change in…

Q: (v) If two objects are in contact and have a same temperature, then the two objects (a) are in…

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Q: -What is the change in internal energy of a system which does 3.5 x 10^5 J of work while 3.00×10^6 J…

A: Given data The work done by the system is W = 3.5 x 105 J. The heat transferred to the system is…

Q: The amount of heat transferred to a thermodynamic system is Q=0,5KJ.Find the work done by  the…

A: Given data: Heat transferred to the thermodynamic system is Q = 0.5 kJ = 500 J Change in the…

Q: During a process, the internal energy of a system increases by 16 Kj, at the same time it performs a…

A: According to the first law of thermodynamics,  dQ = dU + dW  where, dQ is the heat supplied, dU is…

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.