An inventor develops a stationary cycling device by which an individual while peddling can convert all of the energy expended into heat for warming water. How much mechanical energy is required to increase the temperature of 300 g of water (enough for one cup of hot chocolate) from 20 deg C to 85 deg C? (Water has a specific heat of 4186 J kg deg C.) part b.  A mediocre cyclist can produce 150 J of energy per second. How long (in minutes) would it take this cyclist to heat the cup of water for hot chocolate?

Q: A 4-ton air conditioner removes 5.06×107 J (48,000 British thermal units) from a cold environment in…

A: (a) Write the formula for the EER. Thus,

Q: Judy exercises for 15 minutes and uses up 185 kJ of energy. Her efficiency of pedaling is 35% A.…

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Q: I'm not quite understanding these two problems please help!

A: Part D: specific heat of different substance is given , Specific heat of  a substance  indicates the…

Q: I have 500g of water at 25oC. If the amount of heat required to raise the temperature of this water…

A: Given data:Mass of the water, m = 500 g = 0.5 kgThe specific heat of water, C = 4.186 joule/gram…

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Q: (a) A baseball weighs 5.13 oz. What is the kinetic energy, in joules, of this baseball when it is…

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Q: A 4-ton air conditioner removes 5.06×107 J (48,000 British thermal units) from a cold environment in…

A: Given: air conditioner removes 5.06×107 J Or 48000 British thermal units Time 1 hr or 3600 sec (a)…

Q: 1. If you wanted to melt ice, then heat it up, and get the water to just barely vaporize, how many…

A:

Q: 1. Suppose 3,500[J] of work is done on a system, and 4,000[J] of heat flows into the system during…

A: work done on the system = - 3500 J Heat added to the system = +4000 J Using law of thermodynamics…

Q: A 60-kg hiker wishes to climb to the summit of Mt. Ogden, an ascent of 5000 vertical feet (1500 m).…

A: ⇒   Given     Mass of hiker M = 60kg.     height og mountain h = 1500 m.

Q: a. 100 J of heat energy are transferred to 20 g of mercury initially at 20°C. By how much does the…

A:

Q: 300J of energy are transferred to a system in the form of heat while the thermal energy increase by…

A: Given data The change in internal energy is ∆U=150 J. The energy transferred to a system is ∆Q=300…

Q: crate of fruit with a mass of 32.0 kg and a specific heat capacity of 3650 J/(kg⋅K) slides 8.80 mm…

A: According to work energy theorem Work done by net force = change in kinetic energy

Q: 5.120 A driver’s manual states that the stopping distancequadruples as the speed doubles; that is,…

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Q: How much heat is needed to raise the temperature of 2 kg of water 5K? a. 41800J b. 42800J c. 43800J…

A:

Q: How much internal energy in Joule is generated when a (1.67x10^1)-g lead bullet, traveling at…

A: Mass of bullet "m " = 1.67×10^¹ g  Velocity of bullet "v"= 4.9×10^² m/ s .

Q: 100 J of heat energy are transferred to 60 g of mercury. By how much does the temperature increase?…

A: A ) Mass of mercury (m)= 60 g Heat energy transferred (H) = 100 J

Q: You want to heat your oven to 400°F. Given that your oven has a surface area of 1m2, about how much…

A: Given  Surface area of oven(A)= 1 m2 Temperature of oven (T) = 400°F We want to calculate power…

Q: A lump of plasticine weighing 200 g is thrown at an angle of 30° and at a speed of 16 m/s towards…

A:

Q: When someone has a fever, his or her body temperature might increase by as much as 2°C. Suppose this…

A: The given values are, ΔT=2° Cm=48 kg

Q: If I add 37,483 J of energy to an ideal gas inside a balloon, causing the internal energy to…

A: Given data The heat added inside the balloon is given as ∆Q=37483 J. The increase in internal…

Q: A 250-g aluminum cup contains 700 g of water in thermal equilibrium with the cup at 75°C. The…

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Q: Compared to a giant iceberg, a hot cup of coffee has more what?   (A) Thermal energy and higher…

A: It is a concept of Thermodynamics

Q: A gas burner transfers 9.40 ✕ 105 J into a block of ice with a mass of 1.75 kg and an initial…

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Q: (a) How long will the energy in a 1470-kJ (350-kcal) cup of yogurt last in a woman doing work at the…

A: It is given that,

Q: An inventor develops a stationary cycling device by which an individual, while pedaling, can convert…

A:

Q: When you put on the brakes on your bicycle, friction heats the steel rims of your wheels. Could this…

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Q: [b] About how many joules of heat energy does it take to cook a pound of pasta? Use reasonable…

A: Mass=0.45kg

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Q: A food calorie is a unit of energy such that 1 food calorie = 4184 J. This means that a person that…

A: The calories burned during the basal metabolic process is P=WtW=Pt=90 W1 s=90 J1 cal4184 J=0.0215…

Q: Imagine that a hypothetical life form is discovered on our moon and transported to Eirth. On a hot…

A: Extra terrestrial :Heat lost = Mass * latent heat of vapourisation  = 339 cal/gm * 259 gm = 87801…

Q: a) How much heat (in joules) is required to raise the temperature of 26.3 kg of water from 18 ∘C to…

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Q: How much energy would you consume daily if you kept 3 lightbulbs of 25 watts on all day long?.

A: Power consumed by 1 bulb, p=25W Total power consumed by 3 bulbs=P=3p=75W 1 day, t=86400Seconds. so…

Q: A 200-g aluminum cup contains 800 g of water in thermal equilibrium with the cup at 80°C. The…

A: the rate of energy being removed will be the cooling power knowing we have two objects that the…

Q: Suppose 8.50 x 10 ) of energy are transferred to 1.79 kg of ice at 0°C. The latent heat of fusion…

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Q: If a typical city consumes electrical energy at a rate of 2.0 GW (that's 2 billion joules per…

A: Given data The power is given as P = 2 GW. The time duration is given as t = 14 weeks. The speed of…

Q: Running at 15km/h for 60 minutes   I weigh 81.65kg   a) how much energy is used?   b) how much…

A: (a) The kinetic energy of the person is K=12mv2=1281.65 kg15 km/h2=708.767361111 J≈709 J

Q: A gas burner transfers 9.40 ✕ 105 J into a block of ice with a mass of 2.00 kg and an initial…

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Q: 1. A 210 W heater is placed in 2kg of water and switched on for 200 s, how much energy is needed to…

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Q: A thermodynamic system undergoes a process where its internal energy increases by 200 J. During this…

A: The change in internal energy of the system,

Q: image

A: Specific heat of copper (solid) = 386 Jkg-C Melting point = 1356 K Specific heat of copper (Liquid)…

Q: An aluminum rod is 30cm long at 33°C and has a mass of 330g. If 13,000 J of energy is added to the…

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Q: A 53−kg person drinks5.4×102g of milk, which has a caloric value of approximately 3.0 kJ/g.If only…

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Q: If a machine does 74.76 kJ of work after an input of 88.36 kJ of heat, what is the change in…

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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.