When you skid to a stop on your bike, you can significantly heat the small patch of tire that rubs against the road surface. Suppose a person skids to a stop by hitting the brake on his back tire, which supports half the 80 kg combined mass of the bike and rider, leaving a skid mark that is 40 cm long. Assume a coefficient of kinetic friction of 0.80. How much thermal energy is deposited in the tire and the road surface?

Q: What is the change in internal energy of a system that takes in 4.43  106 J of heat, and does 4.50…

A:

Q: On his honeymoon, James Joule attempted to explore the relationships between various forms of energy…

A: At the water falls, the water will fall from a certain height it would convert its potential energy…

Q: A system does 1.80×108 J of work while 7.50×108 J of heat transfer occurs to the environment. What…

A: Given :

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A: Given that  Work done by the system (W) = 4.50×105J Heat transfer into the system is (Q1) = 2.83…

Q: An engineer claims to have measured the characteristics of a heat engine that takes in 100 J of…

A: The expression for the ratio of the temperatures is,

Q: From what height should be dumped a body with mass of 3 kg, so that the amount of heat given off,…

A:

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

A:

Q: The box of a well-known breakfast cereal states that one ounce of the cereal contains 103 Calories…

A: The unit of energy can be converted from kilocalories to joule by multiplying with 4186 .   The…

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A:

Q: A system consists of 2.0 kg of water at 75°C. 25 J of work is done on the system by stirring with a…

A: According to first law of thermodynamics, the amount of heat given to the system is equal to the sum…

Q: A system does 2.00 x 10° ) of work while 6.20 x 10 ) of heat transfer occurs to the environment.…

A: Given : Work done by the system (W) = 2 x 108 J Heat transfer to the environment (Q) = -6.2 x 108 J…

Q: From what height must a block of ice be dropped so that it melts completely on falling? Assume…

A: The amount of heat per unit mass transferred during change of state of substance is called latent…

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

A: (a)   The energy input of the air conditioner can be calculated as,

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A:

Q: If work is done on a system, does the internal energy of the system increase or decrease? If work is…

A: Given:  Work done and internal energy

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A:

Q: A railroad car of mass 1500 kg is moving with a speed of 6.00 m/s. It collides and couples with two…

A: Given data: Mass of the railroad car is m = 1500 kg The speed of the railroad car is v = 6 m/s The…

Q: 2 of surface area 34°C, ε=0.9 skin and is outside exercising on a h=10 W/m2K, 15°C day. The student…

A: Given:- Area A = 1.5 m2  Surface Temperature T1 = 340 C  Emissivity e = 0.9  h = 10 W/m2K  The…

Q: In a tennis game, a player has taken 1.00 kg of water that has been evaporated through perspiration…

A: Internal energy change of the player = - 3410000 Joules  Using 1 nutritional calorie = 4186 Joules

Q: A(n) 80.0-kg student eats a 160-Calorie doughnut. To burn-it-off, he decides to climb the steps of a…

A: Work done is equal to product of force and displacement and work done is stored in the form of…

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A: The given values are, m=62.0 kgvi=6.90 m/sL=4.80 mμk=0.300h=2.50 m

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Q: An iron plate is held against an iron wheel so that a sliding frictional force of 50. N acts between…

A:

Q: What is the change in internal energy of a system which does 4.50×105 J of work while 3.00×106 J of…

A: The heat transfer in this case is

Q: 2. A firefighter decides to show off by sliding down the pole by their hands only without gloves.…

A: Part a: The potential energy changed during the fall is converted to kinetic energy and heat energy…

Q: model steam engine of 1.00 kg mass pulls eight cars of 1.00 kg mass each. The cars start at rest and…

A: First law of thermodynamics assigns that the change in internal energy of a system is equal to the…

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

A:

Q: In moving out of a dormitory at the end of the semester, a student does 2.12x 104 J of work. In the…

A: according to 2md law of thermodynamics  Q = W + U      Q = heat given to the system W = work done b…

Q: When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is released.…

A: given, When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is…

Q: A 75-kg cross-country skier glides over snow as in Figure P11.29. The coefficient of friction…

A:

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

A:

Q: Consider the change in the internal energy of a system. -What is the change in the internal energy,…

A: Given data: Work done by the system (W) = 4.725×105 J Heat added (Qin) = 3.2×106 J Heat rejected…

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: How much work is needed to lift a bag of groceries that weighs 250N to a height of 4m?   A. 1000…

A: Given : w = 250 N h = 4 m

Q: The surface waters of tropical oceans are at a temperature of 27°C while water at a depth of 1200 m…

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Q: 74 kg is interested in jogging on the treadmill as their primary means of exercise, while they…

A: Given:-  The mass of the client m = 74 kg  The number of clients is N = 42  while they listen to…

Q: What is the change in internal energy (in J) of a system that does 4.50 ✕ 105 J of work while 3.00 ✕…

A:

Q: Roughly how high could a 370 K copper ball lift itself if it could transform all of its thermal…

A: Equate thermal energy to mechanical work

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A: Given information: The mass of the block (m) = 2 kg spring constant of the first spring (k1) = 1000…

Q: What is the change in internal energy (in J) of a system that does 4.50 ✕ 105 J of work while 3.40 ✕…

A:

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.