A power transmission line carries 520 A of current at a voltage of 924 kV. If the line has a resistance of 48 u/m, what is the rate at which energy is being dissipated (in kW) over 509 km of line?

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: Example 4 A bag of wheat weighs 100 kg. To what height should it be raised so that its potential…

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Q: An electrical power station requires 1.1 × 1014 J of heat transfer into the engine and has an…

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Q: The efficiency of an engine is 0.510.  For every 1.20 kJ of heat absorbed by the engine, how much…

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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: A steam engine boiler is maintained at 250°C (523K) and water is converted into  steam. This steam…

A: The direction of heat transmission and the efficiency of heat engines are constrained by the second…

Q: A body (mass m) is driven along a rough horizontal path (kinetic friction coefficient u) by a…

A: (a) A periodic force is acting on a body of mass m. Net force acting on the block is given as,…

Q: What must occur in cases where in entropy decreases?

A: The entropy is defined to be a measure of randomness. In other words, it is the amount of energy…

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

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Q: Can a ship make use of internal energy of sea water for the working of its engine?

A: No, a ship cannot make use of internal energy of sea water for the working of its engine because

Q: An automobile engine consumes fuel at a rate of 26 L/s and delivers 65 kw of power to the wheels. If…

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Q: (a) How much heat transfer occurs to the environment by an electrical power station that uses…

A: Given data: Heat input, QH=1.25×1014  Efficiency, η=0.44 a)  Heat transfers to environment is find…

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: Assuming isothermal condition how deep is the pool at a point where an air bubble, upon reaching the…

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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: When water vapor condenses, the entropy of the water (A) increases (B) decreases (C) does not change…

A: When water vapor condenses, the entropy of the water(A) increases(B) decreases(C) does not change(D)…

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: A gasoline truck engine takes in 10,000 J of heat and delivers 2,000 J of mechanical work per cycle.…

A: Find the heat energy due to cold reservoir. QH=W+QCQC=QH-W=10,000 J-2,000 J=8000 J The entropy of…

Q: A certain heat engine does 9.0 kJ of work and 7.50 kJ heat transfer occurs to the environment in a…

A: Given data: Work done by heat engine, W=9.0 kJ Heat transfer to the environment, QC=7.50 kJ

Q: Distinguish between quasi-static and non-quasi-static processes?

A: The quasi static process is a thermodynamic process, and it occurs slowly enough for the system to…

Q: at transfer requirements of a facility. One is smaller and eaper but requires a larger pump, while…

A: Given: There are two heat exchanger that can meet the heat transfer requirements of a facility. One…

Q: 1. (a) How much heat transfer occurs to the environment by an electrical power station that uses…

A: Given: Heat transfer into the engine  Efficiency (η) = 41% = 0.41The Formula of efficiency is

Q: Explain about Non-conservative Forces and Internal Energy in a Tire.

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Q: a) The efficiency of a particular cyclical heat engine is 41%. If 371 kJ of heat are being…

A: Given data: Efficiency of heat engine is, η=41% = 0.41. Heat supplied to engine is, Q1=371 kJ.

Q: Which has more entropy: (a)  a pile of bricks, or the resulting house;

A: Entropy is a measure of disorder and entropy increases when a thermodynamic system goes from an…

Q: Differentiate between Quasi-static and Non-quasi-static Processes?

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Q: (a) (b) (c) In the diagram shown above, the points on the PV diagram have the following values:…

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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: Write a note on “ENTROPY”.

A: Entropy can be defined as the measure of randomness or molecular disorderness of a system. It is an…

Q: a refrigerator removes heat from the cubicle at the rate of 20kj and ejects 24kj into a room per…

A: Given in question:   Heat removed from the cubicle per cycle(QR) = 20 KJ…