(a) How long will the energy in a 1470-kJ (350-kcal) cup of yogurt last in a woman doing work at the rate of 150 W with an efficiency of 20.0% (such as in leisurely climbing stairs)?(b) Does the time found in part (a) imply that it is easy to consume more food energy than you can reasonably expect to work off with exercise?

Q: )How long in minutes will the energy in a 904 k) (216 kcal) cup of yogurt last in a woman doing work…

A: Given: The energy is 904 kJ.             The power is 125 W.             The efficiency is 20.0%.…

Q: A gasoline engine has a power output of 200 kW. Its thermal efficiency is 35.0%. (a) How much heat…

A: Power Output of engine, P=200kWThermal efficiency,η=35%=0.35

Q: Suppose a woman does 450 J of work and 9300 J of heat transfer occurs into the environment in the…

A: Workdone by the women is W = 450 J Amount of heat transfer is Q = -9300 J (As heat is going out of…

Q: A heat engine receives 500 j of heat from its combustion process and loses 391 J through the exhaust…

A: Given data:  Heat input (Qin) = 500 J Heat loss = 391 J Required: The efficiency of heat engine

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

A:

Q: A refrigerator does 26.0 kJ of work while moving 107 k] of thermal energy from inside the…

A:

Q: (a) How much heat transfer occurs to the environment by an electrical power station that uses…

A: The input heat transfer,

Q: (a) What is the best coefficient of performance for a heat pump that has a hot reservoir temperature…

A: (a) Given Data: The temperature of the hot reservoir is, Th=50.0 oC. The temperature of the cold…

Q: An electrical power station requires 1.1 × 1014 J of heat transfer into the engine and has an…

A:

Q: A prototype power generation device that cycles steam between a geothermal source (temperature 393…

A: Given: The source temperature of the cycle is 393 K. The sink temperature of the cycle is 280 K.…

Q: (a) How much food energy (in kcal) will a man metabolize in the process of doing 36.7 kJ of work…

A:

Q: It has been proposed to use the thermal gradient of the ocean to drive a heat engine. Suppose that…

A:

Q: When you skid to a stop on your bike, you can significantly heat the small patch of tire that rubs…

A:

Q: As a gasoline engine is running, an amount of gasoline containing 16,000 J of chemical potential…

A: The work done by the engine, W=4000 J   The input chemical energy, Einput=16000 J

Q: A heat pump is a heating system that has an efficiency of about 150 %, that is, for every joule (J)…

A: Let us first look at the statement of Second Law of Thermodynamics, the Kelvin-Planck Statement:…

Q: An automobile engine consumes fuel at a rate of 26 L/s and delivers 65 kw of power to the wheels. If…

A:

Q: A weightlifter curls a 28 kg bar, raising it each time a distance of 0.55 m.  How many times must…

A:

Q: A(n) 88-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.2 s. (a) Calculate the…

A: Mass(m)=88 kg Initial speed=0 m/s Final speed=11 m/s Time taken=4.2 s

Q: A heat engine exhausts 3 200 J of waste heat while performing 1 500 J of useful net work. What is…

A: Given data: Work done W=1500J Heat exhausted QC=3200J

Q: A soft drink manufacturer clains that a new diet drink is "low Joule." The label indicates the…

A:

Q: ASK YOUR TI Suppose a woman does 913 J of work and dissipates 8,254 J of heat in the process. (a)…

A: ∆U=Q-W=8254 J-913 J=7341 J2.39×10-4 kcal1 J=1.75 kcal

Q: (a) What is the best coefficient of performance for a refrigerator that cools an environment at…

A: Part (a) Given: The temperature that transfer the heat is T1=45 C. The temperature that cools the…

Q: The efficiency of a muscle during weight lifting is equal to the work done in lifting the weight…

A: efficiency of a muscle during weight lifting is equal to the work done in lifting the weight divided…

Q: A heat engine is involved with exchange of heat of 1915 J, –40J, + 125J and –QJ, during one cycle…

A: Given data- Q1=1915 J Q2=-40 J Q3=125 J Q4=-Q J η=50%=0.5

Q: As a gasoline engine is running, an amount of gasoline containing 11,100 J of chemical potential…

A: Given Data: The input energy is: Qi=11100 J The output energy is: Qo=3700 J

Q: An electrical power station uses 1.68 x 1014 J of heat input with an efficiency of 29.7%. (a) How…

A:

Q: he metabolic power for typing is 150 W for Lili, not a lot as you know probably. How long does it…

A:

Q: A freezer has a coefficient of performance of 6.30. The freezer is advertised as using 525 kW-h/y.…

A: given coefficient of performance of 6.30 It is advertised as using 525 kWh/yr

Q: Suppose a woman does 350 J of work and 9700 J of heat is transferred from her into the environment…

A: a) The change in the woman's internal energy can be found using the first law of thermodynamics: ΔU…

Q: A truck mass of m=1210kg drives up an incline at a constant speed of v = 12.7 m/s. The forces of air…

A:

Q: In the past decades, coal was used to heat the engine of a steam locomotive. With the engine, a…

A: Given that:

Q: A certain nuclear power plant has an electrical power output of 435 MW. The rate at which energy…

A:

Q: As a gasoline engine is running, an amount of gasoline containing 13,600 J of chemical potential…

A: Given: Input energy, E=13600 J Work done, W=3400 J

Q: (a) A woman climbing the Washington Monument metabolizes 6.00×102 kJ of food energy. If her…

A: Given data: Energy, E=6.00×102kJ=6×105J Efficiency, η=18%=0.18

Q: If you have to climb eight stories at a height of 24 m above ground level. Then the extra calories…

A: