A basketball player does 4.81 * 105J of work during her timein the game, and evaporates 0.151 kg of water. Assuming a latentheat of 2.26 * 106J>kg for the perspiration (the same as forwater), determine (a) the change in the player’s internal energyand (b) the number of nutritional calories the player has converted to work and heat.

Q: Suppose a woman does 500 ) of work and 9500 J of heat transfer occurs into the environment in the…

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Q: Determine in which case is heat added to the system? (a) ΔU = –43 J, w = 40 J; or (b) ΔU = 31 J, w =…

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Q: In a system, 4 mol of water is condensed. (a) If 157 kJ of heat is lost by the system to the…

A:

Q: If a system has 325 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its…

A: Given:  Work done, W = 325 kcal = 325 x 4.18 kJ = 1358.5 kJ As there are 4.18 J in one cal.  heat…

Q: ********* a) How much work is done on the steam when 4.21 mol of water at 100°C boils and…

A: Work done on the system is same as latent heat required to convert water into steam. From given no…

Q: A piston-cylinder assembly contains 0.7 lb of air initially at a pressure of 30 lbf/in² and a…

A: Given: Let us consider the given data, Air's mass, m=0.7 lb Initial pressure, P1=30 lbfin2 Final…

Q: (a) An ideal gas maintained at a constant pressure of 159 kPa receives 5.2 × 102 J of heat. If the…

A: Given data:               Pressure , P = 159 kPa = 159×103 Pa               Heat added , Q = 5.2×102…

Q: 5 kg person cann- he rides a bike a duces energy at a verted to heat. TR

A: Energy produced by his body(w)=450WSo in 1hour the produced energy will be(E)=450×3600=1620000JThe…

Q: the graph below, each unit on the horizontal axis is 2.20 x 103 m³ and each unit on the vertical…

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Q: Consider an adiabatic humidification system shown below. The humidifying efficiency is E = 0.8, the…

A: In this question we use :                                   Vca=mcaRTcaPcaR = gas…

Q: Carnot refrigerator extracts heat from a freezer at -5.00°C and exhausts it at 25°C. How much work…

A: Given T1 = 25 0 C = 25+273 = 298 K T2 = 273 -5 = 268 K Heat extracted Q2 = 1 J

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: 3. 4500J of heat was absorbed from a Carnot engine from a reservoir at 650K. The engine did some…

A: Given: To find the following as, Heat is discarded Work done System efficiency

Q: How much metabolic energy should a 200 g bird expend when flying 20 meters? Ignore friction losses,…

A: mass = 200 g acceleration = 1 kg / 1000 g distance = 20 meter

Q: You want to cool a crate of beer for Saturday's barbecue. Assume the crate has a heat capacity C=10…

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Q: In exercising, a weight lifter loses 0.111 kg of water through evaporation, the heat required to…

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Q: (a) When the steam engine is running between 120°C and 30°C, how many Js of calories are there in…

A: Given data

Q: A rigid container that measures 3 ft3 is divided into two equal portions and separated by a thin…

A: The rigid container is divided into two equal portions.

Q: You add 3181 J of heat to a system at constant pressure of 2.78 x105 Pa.  While doing so, its…

A: Given: Heat, Q = 3181 J pressure, p = 2.78 X 105 Pa Internal energy, U=6300 J

Q: When a gas follows path 123 on the PV diagram in the figure below, 415 J of energy flows into the…

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Q: An ideal gas iniatially at 320 K undergoes an isobaric expansion at 2.80 kPa. If the volume…

A: Given :      Initial temperature, T1 = 320 K      Pressure, P = 2.8 kPa = 2.8 x 103 Pa (Isobaric…

Q: A 60 kg woman cheats on her diet and eats a 493 Calorie (493 kcal) jelly donut for breakfast. (a)…

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Q: How long in minutes does it take a 1000W electric kettle to bring 1.0L of water to the boiling point…

A: A) Power = 1000 W volume of water = 1 L initial temperature = 15oC mass of iron = 400 g Efficiency =…

Q: A steam engine takes heat from steam at 221 °C to do work. If the surrounding air at 25 °C is…

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Q: The Ivanpah Solar Electric Generating System is the largest solar thermal power-tower facility in…

A: (a) maximum efficiency η=1-TcTh×100%=1-12+273 K566+273 K×100%=66.0%

Q: (a) If 585 J of heat are added to 49 moles of a monatomic gas at constant volume, how much does the…

A: Heat, H = 585 J  number of moles, n = 49  Cv =3/2 R  CR = 5/2 R

Q: The average mpg rating for an older model of a car is 24.8 miles to the gallon and it takes 7.00x105…

A: A gallon of gasoline= 1.19 x 108J   Internal energy used for 1 mile  = 1.19*10824.3=4.89 x 106J Work…

Q: A sample of 0.1g of water at 100°C and normal pressure (1.013 x 10°Nm¯²) requires 54 cal of heat…

A: Given :             Water Vwater = 0.1 g = 0.1 cc             Pressure P = 1.013 ×105Nm-2…

Q: A Carnot refrigerator is maintaining foodstuffs in a refrigerator area at 4.44°C by rejecting heat…

A: This is based on thermodynamical principle and working of refrigerator.

Q: engine

A: Efficiency for a Carnot engine is given by the following formula. η=1-T2T1orη=WQ1 where T1 and T2…

Q: A Carnot refrigerator extracts heat from a freezer at -5 degree C and exhausts it at 25 degree C .…

A: Convert the temperature from degree centigrade to Kelvin. And

Q: same rate as climbing 116 stairs per minute. Assuming your mass is 76.0 kg and your efficiency is…

A: Answer :- a) The expression to find the power generated in terms of efficiency  is: As height of…

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

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Q: An adiabatic rigid steam tank has expansion valve. Initially, steam is at 5MPa and 600oC. Suddenly,…

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Q: -What is the change in internal energy of a system which does 3.5 x 10^5 J of work while 3.00×10^6 J…

A: Given data The work done by the system is W = 3.5 x 105 J. The heat transferred to the system is…

Q: A system consisting of an ideal gas at the constant pressure of 120kPa gains 960 J of heat. Find the…

A: (a) The work done is W=PΔV Here, P is the pressure of the gas, ∆V is the change in volume. The…

Q: Does a gas do any work when it expands adiabatically? If so, what is the source of the energy needed…

A:

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.