A hot object A is placed in thermal contact with a cold object B. Which is true about the changes in entropy experienced by the objects as heat transfers between them?

Q: Can improved engineering and materials be employed in heat engines to reduce heat transfer into the…

A: Heat engine works in a cycle. Second law of thermodynamics implies that no system can entirely…

Q: The inner and outer surfaces of a 4-m * 10-m brickwall of thickness 20 cm are maintained at…

A:

Q: When 1.70 ✕ 105 J of heat transfer occurs into a meat pie initially at 20.0°C, its entropy increases…

A:

Q: When 1.60×105J of heat transfer occurs into a meat pie initially at 20.0º C , its entropy increases…

A: Given quantities: heat transfer (dQ) = 1.60×105 J increase in entropy (dS) = 480 J/K initial…

Q: 28) Calculate the change in entropy (AS) for the process of heating 2 kg of solid ice from -50°C to…

A: Given value--- mass = 2 kg. T1 = -50 degree C.  T2 = 0 degree C.  specific heat of ice = 2.05…

Q: Why is entropy change at constant pressure greater than entropy change at constant volume

A:

Q: It is usually the case that there is more rainfall in locations on the west side of mountains than…

A: The second step of the process states that the "The air temperature decreases as the winds rise up a…

Q: A 4.00 kg block of ice at 0.00 C falls into the ocean and melts. The average temperature of the…

A: The  change in entropy of the world is 60 J/K

Q: Does the entropy of a system always increase with an increase in temperature?

A: Not always. Entropy of system  increases when heat is transferred. And sometimes temperature can be…

Q: Calculate the entropy change in kJ/K, of 10kg of Silver when it’s temperature increases from 20…

A:

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

A: In the hot oven, the coil of the oven heated, which heats the air inside the oven. The same process…

Q: While doing exercise at a temperature of T = 37∘C, an athlete loses m = 0.50 kg of water per hour by…

A:

Q: both ASA and ASB are positive both ASA and ASB are negative ASA is positive and ASB is negative ASA…

A: The solution for this question is given below...

Q: Should the cooling fluid for an engine have a large or a small heat capacity? Explain.

A: Given: Should the cooling fluid for an engine have a large or a small heat capacity? Explain.

Q: Illustrate by considering a closed system, how the Second law of thermodynamics explains why heat…

A: Solution:-Given thatIllustrate by considering a closed system, how the Second law of thermodynamics…

Q: Which law of thermodynamics is most pertinent to the statementthat “all the king’s horses and all…

A: Second law of thermodynamics is most pertinent to the situation. This law states that physical…

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: You have two heat sinks. One is held at a constant temperature at 20 degrees C, and the other is at…

A: Given, Temperature of first heat sink T1 = 20° C = 20 + 273 K = 293 K Temperature of second heat…

Q: To build high speed railways, seamless rails must be used. As a mechanical engineer, how would you…

A: Solution

Q: How can the thermal conduction of heat from a hot object to a cold object increase entropy when the…

A: Concept used: Second law of thermodynamics is used. Heat flows from a hotter object to a colder one.

Q: A person with skin of surface area 1.85 m2 and temperature 30.0C is resting in an insulated room…

A: Given data A=1.85 m2TR=30°CTs=20°Cε=1

Q: during isothermal process of an ideal gas whose internal energy only depends on its temperature does…

A: