marathoner
Q: (1a) What is the kinetic energy in joules of a 1030-kg automobile traveling at 97 km/h? =__________…
A: Kinetic Energy= (1/2)mV2
Q: (a) The average mpg rating for an older model of a car is 25.3 miles to the gallon and it takes 6.40…
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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: At winter’s end, Lake Superior’s surface is frozen to a depth of ENV 1.3 m; the ice density is 917…
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Q: A crate of fruit with a mass of 31.0 kg and a specific heat capacity of 3600j/(kgxk) slides 8.40m…
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Q: An aluminum rod is 18.9 cm long at 20°C and has a mass 350 g. If 12,000 J of energy is added to the…
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Q: How much internal energy in Joule is generated when a (1.6100x10^1)-g lead bullet, traveling at…
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Q: A 46-kg woman cheats on her diet and eats a 685-Calorie (685 kcal) jelly doughnut for breakfast.…
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Q: A coal- burning steam locomotive heats steam to 180°C and exhausts it at 100°C. During 1 s of its…
A: Refer Table “Heat engine efficiencies. Typical input and exhaust temperatures, ideal (best possible)…
Q: A kettle delivers 2.80 kW of power to 1.45 kg of water. The water is initially at a temperature of…
A: heat require to change the temperature = mc∆T Where c = specific heat heat require to change state =…
Q: In a process for the production of raw materials for the elaboration of circuits, a gas at 1227 ° C,…
A: For an ideal machine ,we can apply Carnot conditions.
Q: Rocky spends all the afternoon hours watching sports on cable TV. In the process, he does 1118 J of…
A: Rocky spends all the afternoon hours watching sports on cable TV. In the process, he does 1118 J of…
Q: In a game of football outdoors on a cold day, a player will begin to feel exhausted after using…
A: Available Internal Energy = U = 8.0 x 105J
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: A weightlifter curls a 28 kg bar, raising it each time a distance of 0.55 m. How many times must…
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Q: 2. (15 %) (a) A tropical cyclone can be modelled as a Carnot heat engine which takes in energy from…
A: A tropical cyclone can be modelled as a Carnot heat engine. The efficiency of the engine is…
Q: A soft drink manufacturer clains that a new diet drink is "low Joule." The label indicates the…
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Q: In an industrial process, a fuel-air mixture is fitted with a piston. When the mixture is ignited at…
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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: How much work can a heat engine emit for each kilogram of burned coal with an combustion heat of 16…
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Q: A 73-kg person drinks 500 g of milk, which has a "caloric" value of approximately 720 cal g'. If…
A: Given: M=73kg, m=500g, C=720cal/gm The total energy of the milk is :…
Q: How long in minutes will the energy in an 862 kJ (206 kcal) cup of yogurt last in a woman doing work…
A: Given Data: The energy stored in Yogurt is, E=862 kJ The power is, P=110 W The efficiency of a woman…
Q: One gram of water (1 cm³) becomes 1671 cm3 of steam when boiled at a constant pressure of 1 atm…
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Q: During running, you lost 4.0×104 J of heat, and your internal energy also decreased by 1.6×105 J.…
A: Change in Internal energy, ∆U=-1.6×105J Heat lost, Q=-4.0×104J
Q: A 55.0kg woman eats a 540 Calorie jelly doughnut for breakfast. (a) How many joules of energy are…
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Q: The water passing over Victoria falls, located along the Zambezi River on the border of Zimbabwe and…
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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: (a) How many joules of energy are the equivalent of one jelly doughnut? (b) How many stairs must the…
A: The weight of the woman is w=58 kg. The woman eats 555 kcal.
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: A 46-kg woman cheats on her diet and eats a 555-Calorie (555 kcal) jelly doughnut for breaktast. (a)…
A: In this question it is given that a woman with weight 46 kg is on dieting she cheats her diet and…
Q: Nuclear fusion, the energy source of the sun and hydrogen bombs, occurs much more readily when the…
A: The average kinetic energy of the atoms is given as K=2.10×10-14 J
Q: A weightlifter curls a 26 kg bar, raising it each time a distance of 0.65 m . How many times must he…
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Q: How much work must be done by this heat pump to supply 2550 J of heat on a day when the outside…
A: Given data : Heat supply to heat pump is, Q=2550 J. Outside temperature is, To=253 K.
Q: A spring has a natural length of 40 cm. A force of 60N is required to keep the spring compressed 10…
A: Given data: Natural length (L0) = 40 cm Focal (F) = 60 N Comparison (x) = 10 cm = 0.10 m Required:…
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: Thermal energy is added to 150 g of water at the rate of 55 J>s for2.5 min. How much does the…
A: Here, Q=55J/s×2.5×60s=8250J
Q: In order to keep a basement from flooding, it is necessary to pump 285 kg of water each minute from…
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Q: LA 75 kg person cannot go out for a long time due to Covid-19 restrictions. That's why he rides a…
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Q: By jogging, a girl is converting food energy into internal energy at the rate of 399 kcal/h above…
A: The heat of the evaporation of fat is Qe = 399 kcal/h = 399 x 1.163 W = 464.037 W.The energy by work…
Q: Over the course of a day, 4.0 kg of water evaporates from the leaves of a corn plant. a) How much…
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Q: An asteroid made out of iron (7860 kg/m3) strikes the Earth in an area where the oceans are very…
A: Given data: The density of asteroid is ρ=7860 kg/m3. The speed of asteroid is v=30 km/s. The…
The marathoner generates approximately 4.0 MJ/h of energy during the run. How much water does he lose during a 2.5 h long run if most of the energy is used for evaporation? (The solution is 4.4 kg)
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