⦁ Which of the following statements does not correctly represent the second law of thermodynamics? ⦁ Perpetual motion machines do not exist. ⦁ Heat flows spontaneously from high temperature regions to low temperature regions. ⦁ The entropy of the universe tends to decrease. ⦁ Heat cannot be converted to work with 100% efficiency. ⦁ Transporting heat from low temperature regions to high temperature regions requires the application of external work.

Q: Determine the rate at which the energy is removed by heat transfer from the refrigerated space, in…

A: The power input to refrigerator is The heat rejected to surrounding is

Q: How work can always be converted to heat directly and completely, but the reverse is not true.

A: Both work and heat are the two different forms of energy. Heat is the energy interaction because of…

Q: Consider a college student who works from 7 P.M. to 11 P.M. assembling mechanical components. The…

A:

Q: An isolated system is at rest. There is no change in the system potential energy. What is the change…

A: Solution: The internal energy of a system is determined by the random, uneven molecular movement; in…

Q: Why do physicists conclude that perpetual motion machines are impossible?

A: Solution:

Q: A closed system receives 250 kJ of energy by the work mode and loses 150 kJ by the heat mode. It is…

A: Given: The amount of energy receive by closed by work is W=250 kJ. The amount of energy lost by…

Q: Heat transfer through a temperature difference is irreversible,

A: An irreversible process is a process during which if a process is reversed it cannot achieve its…

Q: A system consisting of 1 lb of water undergoes a power cycle composed of the following processes: 2.…

A: Dear student, we are suppose to solve only 3 sub parts. Please post other question as a separate…

Q: Consider the PV diagram as shown above when a thermodynamic system changes its state from state a to…

A:

Q: Prove that for an isolated system, there is no change in internal energy.

A: Approach to solving the question:First law of thermodynamics Detailed explanation:  Definition of an…

Q: The work potential of the energy contained in a system at a specified state is simply the maximum…

A: The work potential of any energy source is the  maximum amount of energy we can extract or harness…

Q: Determine the gravitational potential energy, in kJ, of 3 m³ of liquid water at an elevation of 50 m…

A: "Gravitational potential energy is the energy that an object possesses as a result of its position…

Q: In your own words, define efficiency as it applies to a device designed to perform an energy…

A: The energy can be transformed or converted from one from to another form. The complete conversion of…

Q: Describe an imaginary process that violates both the first and the second laws of thermodynamics.

A: First last of thermodynamics, just discusses the changes that a system is undergoing. The…

Q: A closed system undergoes a thermodynamic cycle with three steps: process 1-2 (from state 1 to state…

A: Calculated net work in this cycle in joule.

Q: A claim states that a power cycle has been invented that produces work of 400KJ and requires energy…

A: Such device is impossible, because in the system heat supplied is 300J but amount of work produce is…

Q: kg 9 Air (M= 28.97 kmol) is used for a Stirling cycle engine. Determine the unknown states in the…

A: INTRODUCTION : A Stirling cycle engine is a closed-cycle regenerative heat engine that converts heat…

Q: A heat pump is used to maintain the interior of a building at 21 °C. At steady state, the heat pump…

A:

Q: Problem 1 - Refrigerator A refrigerator operates at steady state with a coefficient of performance…

A:

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.