55 : When 40 kcal of heat is supplied to system, its internal energy increases by 84000 J. Calculate external work done by the system. mechanical equivalent The of heat is 4200 J/kcal.
Q: 67 8. In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was…
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Q: 4. We are heating water in a closed pot 30Kj of heat is given to the pot while 5kJ is wasted through…
A: Given Initial energy of system = U1 = 10 kJ Net amount of heat system takes Q = 30 - 5 = 25 KJ…
Q: A 0.50kg rider is resting on a 1.5kg dynamics hanging rider mass dynamics cart. The hanging mass is…
A: Given, m=0.50 kgM=1.50 kgmh=2.0 kgh=0.50 m
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Q: When a certain quantity of helium gas contained inside and engine cylinder combusts, the expanding…
A: GivenRadius=10cm=0.1mChange in length=8cm=0.08mPressure=140KP=140×103Pa
Q: 7. Write the First Law of Thermo- dynamics in terms of changes in specific volume and changes in…
A: To write: The first law of thermodynamics in terms of changes in specific volume and changed in…
Q: In a certain thermodynamic process, 20 cal of heat are removed from a system and 30 cal of work are…
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Q: How much heat transfer (in J) occurs from a system if its internal energy decreased by 260 J while…
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Q: engine does 12 kJ of work and 7.50 kJ of heat transfer occurs to the environment in a cyclical pro
A: Givenwork. W=12 kJHeat transfer to environment, Q1=7.5 kJ
Q: A person makes a quantity of iced tea by mixing 240 g of hot tea (essentially water) with an equal…
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Q: Which of the following statements is TRUE regarding a thermodynamic system? * A. It must be isolated…
A: Thermodynamical system is the system in which all the thermodynamical variable thermodynamical…
Q: steam having a dryness fraction of 0.9, a volume of 2m^3 and a pressure of 2bar is compressed in a…
A: Solution:-Given thatx1=0.9V1=2 m3P1=2 bar=200 kPaPvn=CP2=10 bar=1000 kPaT2=200°C
Q: 1. A cylinder is pressurized to 3.44 X10^5 Pa. As heat is added and the gas expands, the piston is…
A: Given Data: The pressure inside the cylinder is: P=3.44×105 Pa The initial volume of the cylinder…
Q: How much total heat transfer is necessary to lower the temperature of 0.215 kg of steam from 145.5…
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Q: 5. A Cycle consists of : heat transfer into the system of 20kJ, work transfer into the system of…
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Q: 1. During the isobaric expansion from A to B represented below, -150 J of heat is removed from the…
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Q: 8. A container has a volume of 2m3 of diatomic gas at a pressure of 1Pa. How much more thermal…
A: Given data The volume of the container is V = 2 m3. The initial pressure is given as Pi = 1 Pa. The…
Q: Water initially a saturated liquid at 110°C is contained within a piston–cylinder assembly. The…
A: The specific internal energy of the saturated liquid at T=1100C is defined as : uf=460 kJ/kgug=2517…
Q: 25) In a flask, 114.0 g of water is heated using 67.0 W of power, with perfect efficiency. How long…
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Q: When amount of heat Q is added to a system, and no work is done on it or done by it, its internal…
A: According to the first law of thermodynamic the expression for internal energy is ∆U=Q-WAs the work…
Q: 10. Suppose a heat engine transfers heat into a cold sink at room temperature, 20°C. Assuming it…
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Q: 8. Calculate the efficiency of a fossil-fuel power plant that consumes 382 metric tons of coal each…
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Q: . You find yourself in the middle of a blackout with no electricity. You want to have a cup of tea,…
A: volume of water (V) = 200 cm3density of water = 1 gcm3∆h = 32 cm = 0.32 m Initial temperature of…
Q: Compute the change in internal energy of a 1-kmol sample of dry air if its tempera- re is raised by…
A: Given: The moles of gas in the sample of dry air are 1 kmol. The temperature of dry air is raised by…
Q: 3) A thermodynamic system undergoes a process where its internal energy increases by 200 J. During…
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Q: How does the first law of thermodynamics apply to systems that are not isolated?
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Q: If the student had instead added 62 g of ice initially at -25° C to her lemonade, how much Express…
A: Givenmw=0.25 kg=250 gT1=20°CT2=-20°CT=0°C
Q: 38) In an adiabatic compression, 200 J of work is done on a gas. What is the change in internal…
A: We have a compression process which is adiabatic in nature where a work of W=-200 J is done on the…
Q: 23. No system can absorb heat from a single reservoir and convert it entirely into work without…
A: According to the second law of thermodynamics, there is no device which converts all the energy into…
Q: A freezer is to convert 1.76 kg of water at 29.6°C to 1.76 kg of ice at -4.27°C. If the coefficient…
A: Given m=1.76 kg Cwater=4190 j/(kg. K) Cice=2100 j/(kg k) L=3.34 x 105j /kg
Q: On a cold day, a heat pump absorbs heat from the outside air at -10°C and transfers it into a home…
A: Given value--- cold temperatures = - 10 degree C. Hot temperatures = 30 degree C. We have to…
Q: 5- A residential house contains a reception room and a family room and two- bedroom. The heating…
A: Given: The load in the reception room (L1)=5.5 kW The load in the family room (L2)=3.5 kW The load…
Q: 36. In a heat engine, what material can we "theoretically" use as the working substance? (a) Only an…
A: The heat engine uses pressure volume variance of the substance. The substance takes heat from source…
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