12. Compute the change in the heat content of a 1-kg sample of airif it heats up by 10 Kelvins at a constant pressure 850 hPa, and expands by 10 m³.

Q: A basketball player does 4.81 * 105J of work during her timein the game, and evaporates 0.151 kg of…

A: With the help of  the First Law of Thermodynamics, we have, ∆U=q+w where ∆U= change in internal…

Q: How much work in Joules is required to compress 7 moles of air (y =1.4) at 27°C and 1 atm to 1/3 of…

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Q: A spaceship (consider it to be rectangular) is of size 7 x 4 x 4 (in meters). Its interior is…

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Q: When you use a hand pump to inflate the tires of your bicycle, the pump gets warm after a while.…

A: Solution:- Before proceeding to the answer let's see about the adiabatic process, as it plays a…

Q: Can the outlet temperature of the cold fluid in a heat exchanger be higher than the outlet…

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Q: You can save money on electricity if you put your refrigerator in the basement, which is usually…

A: temperature variation with height:

Q: 2.2 A 50 g silver disk at 300°C is placed in 200 cm of methyl alcohol at 14°C, then removed quickly.…

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Q: 3m' of air at a pressure of I bar and 25 "C is compressed isentropically to Sbar. It is then…

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Q: Should a modern kitchen be air-conditioned? Will this  create cold food(which is supposed to be…

A: Yes, a modern kitchen can be air-condtioned. If the kitchen is an open one then installing an air…

Q: (15.32) If an ideal refrigerator keeps its contents at 2.5°C when the house temperature is 22°C,…

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Q: Suppose a gas is in an insulated container, so that no heat energy can escape. If a piston is used…

A: Lets says there is a cylindrical container whose wall as well as roof and bases are insulated that…

Q: What does zeroth law of thermodynamics tell us about measuring the temperature of an object?

A: Zeroth law of thermodynamic states that , " If two systems A and B, are separately in thermal…

Q: The heating element of a 1200 Watt electric stove can reach temperatures of 860 °C when turned all…

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Q: It is important for the body to be able to cool itself even during moderate exercise. Suppose a 70kg…

A: Given : m = 70 kg t = 30 min = 30 x 60 = 1800 s P = 1000 W

Q: Heat is supplied to 25 lbm of ice (Cp = 0.5  BTU/lbm-F) at 15F at the rate 160 BTU/sec. How  long…

A:

Q: When 1310 J of heat are added to one mole of an ideal monatomic gas, its temperature increases from…

A: d Q = 1310 J  n = 1  Cv =3/2 R d T = 276 - 272 = 4 K

Q: A gas has two specific heats whereas a liquid and and a solid have only one.Why?

A: When heated, the solid or liquid will not undergo any change in its pressure or volume.

Q: TH Ta 4.00cm 3.00cm 2.20m A rectangular bar of gold has the dimensions as shown. (This is a very…

A: length of gold bar, l= 2.2 m cross-section area , A= (3 cm)x(4 cm)=12 cm2 = 12 x(10-2 m )2 = 12 x…

Q: Is a uniform-temperature gas more or less orderly than one with several different temperatures?…

A: When the gas is at the uniform temperature the temperature of each molecule is the same and thus…

Q: Students on a spring break picnic bring a cooler that contains5.1 kg of ice at 0.0 °C. The cooler…

A: (b)The rate of heat transfer is given by, Q˙=kAT2-T1d Here, k is the thermal conductivity of the…

Q: An ideal monatomic gas is contained in a tall cylindricaljar of cross-sectional area 0.080 m2 fitted…

A: The expression for work done is W=P∆V                      ...... (1) The expression for pressure…

Q: Find the total heat capacity at constant volume of 2.35 mol of an ideal diatomic gas where the…

A: When an ideal gas molecules rotate but do not vibrate there will be five degrees of freedom. We know…

Q: An ideal air conditioner keeps the temperature inside a roomat 21°C when the outside temperature is…

A: Given data The inside temperature of the room is: Ti = 21°C = 294 K The outside temperature of the…

Q: Suppose you have 2.5 kg of steam at 100°C occupying 6.5 m° at a pressure of 1.013 x 10° Pa. When the…

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Q: In car racing, one advantage of mixing liquid nitrous oxide (N2 O) with air is that the boiling of…

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Q: Consider a block of ice, with a mass of 2.00 kg and an initial temperature of -8.00°C. Given the…

A:

Q: Does an ordinary electric fan cool the air? Why or why not?If not, why use it?

A: Electric fan

Q: A furnace is shaped like a long equilateral-triangularduct where the width of each side is 2 m. Heat…

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Q: A container holds 4g of neon at a pressure of 5 atm and a temperature of 15 degrees Celsius. How…

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Q: An ideally efficient freezer cools food to 210 K. If room temperature is 300 K, and the machine…

A: Given : Th = 210 K Tc = 300 K Q = 64 J

Q: A cheese ripening room which, has a total surface area of A = 25.0m², has to ensure that the inside…

A: The rate of heat transfer(energy per unit time) is proportional to the temperature difference (T2 −…

Q: A thermodynamic system undergoes a process in which its internal energy decreses by 500 J at the…

A: Change in internal energy, dU = - 500 J  work done, dW = - 220 J

Q: The specific heat of a substance varies with temperature accordingto the function c = 0.20 + 0.14T +…

A: The equation for the heat energy required is given by,

Q: ii) Compute the total heat required to convert 0.19 Kg of ice at -190°C to steam at 190 °C. (Cice =…

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Q: Deduce from the First and Second Laws of Thermodynamics that if a substance such as H2O is expands…

A: According to first law of thermodynamics Q = ΔU + W  According to second law of thermodynamics  the…

Q: s of water at 20.0°C must be allowed to come to thermal equilibrium with a 1.95-kg cube of aluminum…

A:

Q: Find the total heat capacity at constant pressure of 2.35 mol of an ideal diatomic gas where the…

A: constant pressure of 2.35 mol; ideal diatomic gas is given; molecules rotate and vibrate;

Q: Can the temperature of the cold fluid rise above the inlet temperature of the hot fluid at any…

A: When exchanging heat from cold liquids to hot liquids, the temperature of cold liquids rises and can…

Q: O.5 kg Aluminium on a stove i s used to heat 0.25 0 liters pan of water fr om 20. 0°c to 80°C.…

A: