(a) If two objects of different temperatures are placed in contact, will heat naturally flow from the object with higher internal energy to the object with lower internal energy?(b) Is it possible for heat to flow even if the internal energies of the two objects are the same? Explain.

Q: A 20,000 kgkg subway train initially traveling at 18.5 m/sm/s slows to a stop in a station and then…

A: In this question we have to find the rise in temperature. Please give positive feedback if the…

Q: A 500 g aluminum bucket contains 1.20 kg of water at an equilibrium temperature of 40.0 °C. The…

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Q: Metal block: m=0.23kg , T= 38.1C Water: m= 2.5 kg, T= 14C. The block dropped into the water, final…

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Q: 7. Consider a material with a mass of 1.3 kg and a specific heat capacity of 1.7 J/kg°C. Compute for…

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Q: If a system has 4×102 kcal of work done to it and releases 5×102 kJ of heat into its surroundings,…

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Q: in an insulated container, a combination of 1.35 kg of water at 12.0°C , 0.340 kg of copper at…

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

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Q: A 500 g aluminum bucket contains 1.20 kg of water at an equilibrium temperature of 40.0 °C. The…

A:

Q: Is it valid to say that a hot object contains more heat than a coldobject?

A: Answer is NO. Heat is not a quantity it is the energy in transit between two bodies of different…

Q: What is the change in internal energy of a system that takes in 3.33 106 J of heat, and does 4.50…

A: According to the first law of thermodynamics,∆U=Q-W.......(1)Where,∆U is the change in internal…

Q: In an insulated container, you combine hot metal with ice. The ice starts at -20 degrees C. The…

A: Obtain the specific heat of ice. Obtain the specific heat of the water. Obtain the latent heat of…

Q: In exercising, a weight lifter loses 0.148 kg of water through evaporation, the heat required to…

A: The mass of weight lifter loses of water through evaporation,

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

A: Mass of the person , m = 70kg Total time on treadmill, t = 30 min =1800sec Metabolic energy…

Q: A 100 kg steel support rod in a building has a length of 2.0 m at a temperature of 200C. The rod…

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Q: The formation of condensation on a glass of ice water causes the ice to melt faster than it would…

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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: 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: If a gas system of one to two volumes expands under constant pressure at the same time, then 100J of…

A: Given, Heat lost to ocean, Q=-100 J Volume expansion, V to 2V

Q: The average person produces heat at the rate of about 120 W when at rest. At what rate must water…

A: Given: For water Latent Heat of Vaporization (Lv) = 2430 kJ/kg or 2430 J/g Heat produce rate (H) =…

Q: Can the temperature of a system not increase, even if the system an amount of heat Q? absorbs an (A)…

A: To explain : can the temperature of a system not increase , even if the system absorbs an amount of…

Q: 59. In a typical squash game (Fig. 14–21), two people hit a soft rubber ball at a wall. Assume that…

A: The loss in kinetic energy of the ball can be given by, KE=12mv2.............(1) Where, m = mass of…

Q: What is the (approximate) total heat energy absorbed by the system after traversing the path AEC? *…

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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: A car has a mass of 1500 kg, and its aluminum brakes have an overall mass of 6.00 kg. Consider that…

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Q: ENGINEERING APPLICATION. A O.40-kg hot iron horseshoe, just forge (see the accompanying figure), is…

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Q: On a certain dry sunny day, a swimming pool’s temperature would rise by 1.50ºC if not for…

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Q: The pressure on 0.2 kg of water is increased reversibly and isothermally from atmo- spheric pressure…

A: Temperature =20⁰c=293 k Mass of the water =0.2 kg No of moles = 0.2/18 =0.011

Q: A 25,000 kg subway train initially traveling at 15.5 m/s slows to a stop in a station and the stays…

A: In this question we are given that a 25,000 kg subway train initially traveling at 15.5 m/s slows to…

Q: Two objects A and B, made of the same materials, are left for the same interval in the same…

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Q: Determine the heat transfer, in kJ/kg, for the reversible process 1-3 shown in Fig. P8–44.

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Q: A large fraction of the thermal energy generated in the engine of a car is rejected to the air by…

A: Close System:  A type of system in which there is no exchange of matter with surrounding takes…

Q: what is the relationship between the change of length in the metal and the coefficient of thermal…

A: Thermal expansion: It is the tendency of the matter to change in shape, volume, area, density in…

Q: A room is initially at the outdoor temperature of 25°C. Now a large fan that consumes 200 W of…

A: Given that heat transfer is governed byQ=UATi-Towhere U: overall heat transfer coefficient…

Q: During a process, the internal energy of a system increases by 16 Kj, at the same time it performs a…

A: According to the first law of thermodynamics,  dQ = dU + dW  where, dQ is the heat supplied, dU is…

Q: Consider a surface at -5ºC in an environment at 25ºC. The maximum rate of heat that can be emitted…

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Q: In the Physics Department, two laboratories are located next to cach other. One laboratory has an…

A: Given information: The dimensions of the wall: height (h) = 3.65 mWidth (w) =7.0 mthickness (t)…

Q: O A 25.0g silver Speon at 10.0°C is placed in a cup of copfee at 45°C. Determine the heat the Spoon…

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Q: A student living in a 3-m * 4-m * 4-m dormitory room turns on her 100-W fan before she leaves the…

A: Given Volume of Room V=3m x 4m x 4mPower of fan P=100 WTotal time t=8 nInitial pressure P=100…

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: For objects of the same mass, what is most likely to happen if heat is removed? the one with higher…

A: The amount of heat required to raise the temperature of substance of mass 1 kg by unit degree C is…

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.