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: 4. Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…
A:
Q: 4-The following data lists the rate at which work is done and the rate of heat generation (both in…
A: W = Work done Q = Heat generated
Q: 37) During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done…
A: In the given question, Amount of heat removed from the system (Q) = 5.0 J The process is isothermal…
Q: How much heat transfer (in J) occurs from a system if its internal energy decreased by 260 J while…
A:
Q: Suppose a woman does 600 J of work and -9400 J of heat transfer occurs into the environment in the…
A: Work, W = 600 JHeat, Q = -9400 JEfficiency, Eff = ?
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…
A:
Q: Suppose that you had water in a pot on a stovetop. Neglecting the material that the pot is made out…
A: Given data: Power (P) = 1000 W Mass (m) = 1.44 kg Initial temperature (T0) = 10°C Final temperature…
Q: How much total heat transfer is necessary to lower the temperature of 0.155 kg of steam from 145.5…
A: mass = 0.155 kg initial temperature = 145.5 C final temperature = - 15.5 C Total heat energy…
Q: 3. Suppose that 150 J of work is done on a system and 35.0 cal is extracted from the system as heat.…
A:
Q: How much total heat transfer is necessary to lower the temperature of 0.215 kg of steam from 145.5…
A:
Q: A heat engine exhausts 3 200 J of waste heat while performing 1 500 J of useful net work. What is…
A: Second law of thermodynamics
Q: During the isobaric expansion from A to B represented below, -80 J of heat is removed from the gas.…
A: Heat removed = -110 J
Q: 12. A block is pushed up a rough ramp, at constant speed, by a force that is parallel to the ramp…
A:
Q: In an industrial process, a gas phase refrigerant reduces its internal energy by 70 kJ by means of a…
A: Given data dU=-70 kJWin=-20 kJWout=+100 kJ
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: 2. As an example of microscopic thermodynamic analysis based on thermal-energy microstates, the…
A:
Q: How does the first law of thermodynamics apply to systems that are not isolated?
A:
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: A system does 1.80×10* Jof work while 7.50× 10° J of heat transfer occurs to the environment. What…
A: The following data are given: Work done, ∆W=+1.8×108J (positive sign appears because the system is…
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: 2. As an example of microscopic thermodynamic analysis based on thermal-energy microstates, the…
A: In both Conditions, 1st Calculate number of microstate of both system. Then put into entropy formula…
Q: 43) The compressor in a refrigerator performs 580 J of work to remove 160 J of heat from the…
A:
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- 36. In a heat engine, what material can we "theoretically" use as the working substance? (a) Only an ideal gas (such as air), due to their thermodynamic properties. (b) We can use liquids but not solids, since liquids can conform to the shape of their containers (engine), but solids cannot. (c) Any material which expands upon heating can be used.4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?A heat machine is working between two thermal reservoirs with the temperatures of 800oC and 20oC. ¼ of the work of heat machine is being used to operate a Carnot heat pump. This heat pump draws heat from the outside environment at a temperature of 2oC and transfers it to a home at a temperature of 22oC. Given house is losing a heat of 62000 kJ per hour to the outside world, the heat engine must be supplied to keep the house stable at 22oC. Calculate the minimum amount of heat that should be supplied to the heat machine to keep the house stable at 22 degrees.
- 9-6. An ideal gas expands isobarically from 3 atm from 400 to 600 ml. Heat then flows out of the gas at constant volume, and the pressure and temperature are allowed to decrease until the temperature reaches its original value. Calculate a) the total work done by the gas in the processes and b) the total heat flow to the gas.11. A gas absorbs 1500 J of heat, expands and does 2100 J of work. What is the change in internal energy? (Answer: -600 J)