8. Air is compressed by a 15 - kW compressor from P, to P2. The air temperature is maintained constant at 25°C during this process as a result of heat transfer to the surrounding medium at 20°C. Determine the rate of entropy change of the air. State the assumptions made in solving this problem. SHOW-FREE BODY DIAGRAM

Q: (5 blanks) What is the maximum possible efficiency (in Percent) of a steam engine working between a…

A: Introduction: The efficiency of the steam engine is defined as the ratio of work done by the steam…

Q: Prepare a table like Table 12.3 for the following occurrence: You toss four coins into the air…

A: Part A:

Q: A rigid tank contains 5 kg of refrigerant-134a initially at 208C and 140 kPa. The refrigerant is now…

A: Given: refrigerant-134a Mass=5kg Temperature(T1)=20°C Pressure(P1)=140kpa Pressure(P2)=100kpa Find…

Q: 9. Will took a 45.0g cube of solid H20 (an ice cube) out of the freezer at -5.00°C and put it on the…

A: Given data,                        m=45 g                        θ₁ = -5°C                         θ…

Q: 1. An inventor claims to have developed a wonderful new heat engine that operate with a relatively…

A: A heat engine is a thermodynamic device which converts the heat energy into useful work. A heat…

Q: QUESTION 7 A particular heat engine has a mechanical power output of 5.00 kW and an efficiency of…

A:

Q: Which does NOT describe the entropy of the universe after a process has occurred? a. Increases b.…

A: Increases option a

Q: For the following items, determine the following: a. The thermodynamic process the problem…

A: The changes at constant volume is called isobaric process .

Q: (1) When a system changes from an equilibrium state A to another equilibrium state B, choose the…

A: This question can be solved by applying the basic concept of thermodynamics which include heat ,…

Q: 78. ao On a cold day, 24 500 J of heat leaks out of a house. The inside temperature is 21 °C, and…

A: The change in entropy of the house is given by ∆Shouse=QT=-24500J21°C+273.15K=-83.29 J/K

Q: (II) An aluminum rod conducts 8.40 cal/s from a heat source maintained at 225°C to a large body of…

A: We know, ∆S=QT

Q: The entropy of two liquids is increased if they mix. How can immiscibility be explained in terms of…

A: Entropy is a measured physical attribute that is most usually linked with a condition of disorder,…

Q: 55 g of aluminum at 100° C are placed in thermal contact with 55 g of copper at 0° C. The two metals…

A: Given:   The mass of Aluminum, mAl = 55 g Initial temperature of aluminum, TA1= 100 0C Mass of…

Q: A freezer is used to freeze 1.5 L of water completely into ice. The water and the freezer remain at…

A: The expression for change in entropy is, ∆S=QT…

Q: 10. The radiator of a steam heating system has a volume of 20 L and is filled with superheated water…

A: Solution-

Q: 47 A 20 g ice cube at -15°C is placed in a lake whose temperature is 15°C. Calculate the change in…

A: When ice cube at temperature T1is mixed with water at T2 temperature, the system undergoes energy…

Q: In the house to rooms are separated by a wall made of brick 4 inch thick Room A is held a constant…

A: Temperature of room A (TA)=300 K Area of wall in room A (AA)=12 m2 Temperature of room B (TB)=273 K…

Q: 1. Calculate the efficiency of the heat engine as shown below. 2. Write the First Law of…

A:

Q: 8. According to the second law of themodynamics, for any process that may occur within an isolated…

A: Second law of thermodynamics :-  shows the concept of entropy as a physical property of a…

Q: 9. A neatly arranged bookshelf is very orderly system and has low entropy why is it safe to assume…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: A 68.7-g ice cube is initially at 0.0°C. (a) Find the change in entropy of the cube after it melts…

A: The given data are: m=68.7 g=0.0687 kgLf=3.33×105 J/kgT=0° C=273 K Here, m denotes the mass, T…

Q: (5 blanks) What is the maximum possible efficiency (in Percent) of a steam engine working between a…

A: The maximum efficiency of a steam engine is given by- emax=Tsteam-TairTsteam Here we have…

Q: Air is compressed by a 40-kW compressor from P to P2. The air temperature is maintained constant at…

A:

Q: 7 kg of water at 55oC is added to a large quantity of ice at 0oC resulting in ice-water. What is the…

A:

Q: Describe and explain entropy of this situation 1. South Korea before and after 12 years 2. Before…

A: Entropy is the measure  of molecular disorder or randomness of the system .It is measurement of…

Q: How much is the change in the entropy of 0.5kg of water at freezing point when it is heated to  its…

A: Hey, there are multiple questions posted; we are authorized to answer one question at a time, since…

Q: 2) An ideal gas was slowly expanded from 2.00 m^3 to 3.50 m^3 at a constant temperature of The…

A:

Q: image 114

A: Efficiency of Carnot engine defined as η=1-TCTH×100% Here η is efficiency, TC and TH temperature of…

Q: 7. The entropy of 500g of water increases or decreases as it undergoes temperature change or phase…

A: Water is going through a phase change at T=0oC with latent heat of fusion as L=3.33×105 J/kg.…

Q: Q2:4 rigid tank contains 5 kg of saturated vapor steam at 100°C. The steam is cooled to the ambient…

A: Write the given values of this problem. m=5 kgTs=100°CTa=25°C

Q: 6. A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The…

A: From the question, it is given that- Efficiency of Carnot cycle: η = 55% = 0.55 Temperature of lake:…

Q: Q2/ Solve the following: 1. Prove that the thermal efficiency of a heat engine is Neh = 1 - QH 2.…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 2-kg of saturated water vapor at 600 kPa are contained in a piston–cylinder device. The water…

A:

Q: A 1 500-kg car is moving at 20.0 m/s. The driver brakes to a stop. The brakes cool off to the…

A:

Q: . Find the change in entropy when a 3.00 kg of boiling water changes to steam at 100°C.

A:

Q: Air is compressed by a 15-kW compressor from P1 to P2. The air temperature is maintained constant at…

A: It is given that,

Q: 2. There are developed 10hp by a Carnot engine between 1000F and 100F. Determine; a. The thermal…

A:

Q: Explain why it is impossivle for any process to be more than 100% efficient.  Give an example of a…

A: Particularly the process doesn't  mentioned, so let me consider an example

Q: It is unlikely that a process can be isothermal unless it is a very slow process. Explain why. Is…

A: Isothermal process is a thermodynamic process in which temperature of a system remains constant. It…

Q: What is the entropy of your name (AHMAD SAMI)?

A: The name AHMAD SAMI consists of 9 alphabets in which letter A is repeating 3 times, and letter M is…

Q: One cubic meter of oxygen at initial pressure of 1 bar and a temperature of 17°C are compressed…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…