The heat absorbed to raise the temperature of 430 kg of water is 604569 J and specific heat capacity of the material is 4.26 J/kg. K. Find the temperature of the water in ⁰C

Q: Match each example of energy transfer with the correct type. 1. hot air vents near the floor 2. the…

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Q: 7. The only mode of heat transfer that does not need a medium. 8. A mode of heat transfer that…

A: given = one word answer or fill in the blank

Q: 1) A piston-cylinder system containing 1100 grams of an ideal gas ‘X’ is cooled from 900 K to 100 K…

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Q: At t=0, a fruit juice at 32 °C is brought to a mountain where the temperature is 13 °C. After 5…

A: Newton law of cooling  it defined as the rate of cooling is proportional to the temperature…

Q: 5.A heat pump heats a house in the winter and then reverses to cool it in summer. The interior…

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Q: specific heat of a substance, c, is by definition the heat required to lower the temperature of a…

A: The amount of heat required to increase the temperature of one gramme of a material by one…

Q: ir flows steadily through an engine at constant temperature 400 K.Find the work per kilogram if the…

A: Air flows steadily through an engine at constant temperature 400 K.Find the work per kilogram if…

Q: 1.0 A mass of ice at -7 °C is needed to cool 124 kg of vegetables (Cp = 3.35 KJ /kg.K )in a bunker…

A: The required mass of ice is 23.087 kg.

Q: Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant…

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Q: 8:  The kinetic energy E of a body is proportional to its weight W and the square of its velocity…

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Q: Convert each temperature. 22 °C to K (approximate room temperature)

A: Given, temperature = 22oC we know 1oC = 273 K

Q: Calculate the quantity of heat to be transderred in BTU to 2.81 kg of brass to raise its remperature…

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Q: Problem 7: A power plant operates between temperatures TH = 86°F and T = 41°F at a depth of 2100 ft.…

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Q: en cylindrical tank contains 2 liquids with specific gravities and depth as follows: liquid 1:…

A: Given: An open cylinder wit two liquids.  Liquid 1: s1=1d1=1.30 m Liquid 2: s2=1.5d2=1.35 m

Q: A house, for cooling purposes, consists of two zones: the attic area zone A and the living area zone…

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Q: QI:: A- The absolute pressure in water at a depth of 5 m is read to be 145 kPa. Determine the…

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Q: A system with 100 kJ of internal energy is allowed to do work amounting 500 kJ. Find the value of…

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Q: Find the amount of heat lost per hour through a square foot of building wall composed of 18-in.…

A: Given data, The schematic diagram of the composite wall is Thickness of metal lath and plaster, t1…

Q: A 3,500-seat auditorium is to be air-conditioned using window units 10 kW nominal value. Assume that…

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Q: 1.0 A mass of ice at -7 °C is needed to cool 114 kg of vegetables (Cp = 3.35 KJ /kg.K )in a bunker…

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Q: thermodynamics The heat loss of a human body during sitting still is 400 kJ / h. If the ventilation…

A: Internal energy :  Internal energy is defined as the energy associated with the random, disordered…

Q: A group of twenty executives attend a board meeting in a room that measures 20 feet by 20 feet and…

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Q: Task 5 A sample of gas is compressed by an average pressure of 2 atm which decrease its volume from…

A: We have to determine The internal energy in the system

Q: b. The ceiling of a certain room in a student's dormitory has an area of 200 ft’. It contains…

A: Heat is a form of energy which transfers from high temperature reservoir to the low temperature…

Q: There is a piston-cylinder assembly with a mass of 50 kg and a surface area of ​​0.01 m2. The mass…

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Q: Given: A= 5i + 4j + 6k lbm B= 2i + 4j + 9k kgm C= 20i + 20k N Find: 3.) Direct cosines of C 4.) R

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Q: Compute the mass of 60 ˚C air inside the rectangular shape system with dimensions 2m X 3m X 1m. The…

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Q: A 40.97-cm cube of ice melts; the liquid water is placed in a spherical container filling it. If the…

A: Given data: a=40.97 cmvi=1.094 cm3/gvw=1.002 cm3/g Need to determine the diameter in cm of the…

Q: Given: A= 5i + 4j + 6k lbm B= 2i + 4j + 9k kgm C= 20i + 20k N Find: R in N

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Q: A balloon holding 4.50 moles of oxygen (O2) gas absorbs 975 J of thermal energy while doing 107 J of…

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Q: The force exerted on a car by a prototype crash barrier crash is F=-(4400 + 50000S) N, where S  in…

A: given; force(F)=-(4400+50000S)where;S is in meter.velocity(V)=100kph…

Q: 4. 680 meters per second into feet per mi A. 132,000 B. 123,354 5. 130 °F into °C A. 45.45 B. 44.55…

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Q: 1.0 A mass of ice at -7 °C is needed to cool 224 kg of vegetables (Cp = 3.35 KJ kg.K )ir a bunker…

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Q: The heat loss of a human body during stationary sitting is 400 kJ/H. A population of 800 if the…

A: A thermodynamic system is anything whose thermodynamic properties are of interest to the observer ,…

Q: The Mass (m in grams) of a material having density 60 kg/m3 and volume 3 m3 is

A: Answer: Option B is correct.

Q: A 1 cubic meter of water inside a one kg ahminum container is heated from 20°C to 30°C Find the heat…

A: Given:Volume of water, V=1 m3mass of aluminium container, m=1 kginitial temperature, T1=20o Cfinal…

Q: 4. Magnolia Dairy products plant must cool 4000 gallons of fresh milk received from the farm per day…

A: Given data: m=4000 gallons1.03×8.6 lbs1 gallon=35432 lbCp=0.935Ti=80°FTf=38°FdT=15°F Need to…

Q: 4. The weight of a 10-lb mass is measured at a location where g = 32.1 ft/sec2 on a spring scale…

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Q: b. The ceiling of a certain room in a student's dormitory has an area of 200 ft". It contains…

A: Given: The area of the ceiling is, A=200 ft2. The R-value is 30 K·m2W. The temperature of the room…

Q: A water source generates a flow rate of 30 m 3/s in a region of y= 0 with angle zero degree and x=0…

A: Data given-  Q = 30 m3/s  r = 5 m

Q: Calorimetry In a kitchen there are two identical pans that have been previously heated, one of the…

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Q: Gas at 1.5 bar abs. and 20 °C in a closed vessel is compressed to 10 bar abs. Its compressed…

A: The value of 'n' can be calculated using the characteristics equation for Polytropic processes which…

Q: One mole of a gas obeys the Ideal Gas Law PV = 20T, where P is pressure, V is volume, and T is…

A: Given data: One mole of a gas obeys the law: PV = 20T Where P is the pressure, V is the volume and T…

Q: A power station with an efficiency e generates W watts of electric power and dissipates D J of heat…

A: Given data  e = 0.2W = 4.9 x 108 wattsD = 2.5 x 108 JT = 4 C cw = 4,184 J/kg-C To determine the mass…

Q: gas contained in a rigid tank has an initial internal energy of 750 kJ. The gas is cooled losing 350…

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Q: Work and heat depend only on the beginning and ending states and not on the path from the starting…

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Q: A 2 kW, 40 litres water heater is switched on for 20 minutes. The heat capacity c, for water is 4.2…

A: Given:P=2 kWV=40 liters=0.04 m3t=20 min. or 1200 sCp=4.2 kJ/kg.K

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.