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: The Kingda Ka roller coaster at Six Flags Great Adventure and Safari in New Jersey currently holds…

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Q: The total mass of a paratrooper - the person and all the gear - is 118kg. the paratrooper jumps out…

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Q: a) Find the change in the mechanical energy (potential + kinetic) of the block from the top to the…

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Q: Please help! Thank you! A 68.4-kg sky diver jumped out of an airplane at an altitude of 0.900 km.…

A: Given Data : The mass of the skydiver is given as m = 68.4 Kg. The height of the skydiver initially…

Q: You observe a grasshopper eating a blade of grass. You know that each blade of grass contains 100…

A: Given that:- Energy contain in one blade of grass=100 units

Q: A fire is lit in a hot air balloon, causing 100 J of heat to flow into the air in the balloon.…

A: The change in internal energy is given by, ∆U=Q-W

Q: While riding his bicycle, Jans does 7.5 E7 J of work and gives off 4.3 E7 J of heat. What is the…

A: Given Data:Work done Heat released To Determine:The change in the internal energy of the person.

Q: This time, the pendulum is 1.07 m long and has a mass of 4.92 kg. You give it a push away from…

A: length (L) = 1.07 m mass (m) = 4.92 kg initial speed = 2.88 msenergy lost = 1 J

Q: On reentry, the Space Shuttle’s protectiveheat tiles became extremely hot. (a) Was the mechanical…

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Q: A 3.50 kg block of ice slides down a ramp. The block starts at the top of the ramp from rest, and…

A:

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: Riding a bike burns 100 calories per mile. If you ride at 20 miles per hour, what is your average…

A: Solution:-Given thatEnergy=100 calories per milespeed=20 miles per hour

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

A:

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: A student evaluates a weight loss program by calculating the number of times she would need to climb…

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Q: Give an explanation of how food energy (calories) can be viewed as molecular potential energy…

A: Given: Food energy can be viewed as molecular potential energy is discussed below.

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…

A:

Q: A book falls from a table. Suppose some of the thermal energy within the book is spontaneously…

A: Suppose some of the thermal energy within the book is spontaneously converted into kinetic energy…

Q: A 1600 kg car steadily accelerates from rest to 60 mi/hr over a 2.8 second time span. How much work…

A: Given:mass of car, m = 1600 kgfinal velocity, vf = 60 mi/hr = 26.816 m/s

Q: A 46-kg woman eats a 522 Calorie (522 kcal) jelly doughnut for breakfast. (a) How many joules of…

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: An assistant for a football team carries a 26.0 kg cooler of water from the top row of the stadium,…

A: We kno that work done  W=Fdcosθ a) F=26*9.81=255.06  angle θ=180 Wok done by the assistant…

Q: A weight lifter bench‑presses a 150.0 kg barbell from his chest to a height equal the length of his…

A: Solution:   Given Values, Mass of barbell (m)=150 KgHeight (h)=0.850 m

Q: Problem 12:  When water flows through river rapids or over a waterfall, it experiences a decrease in…

A: Height of waterfall (h) = 41 m  Specific heat of water (c) = 4.19 × 103 J / kg ° C

Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…

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Q: A 75-g bullet is fired from a rifle having a barrel 0.0660 m long. Choose the origin to be at the…

A: Given:- m=75 kg  x=0.6 m  F(x)=16000+10000x-24000x2, x in the meter.  Find:- A) Determine the work…

Q: 9. A physics student decides to “burn off” some Calories by climbing a ladder. As the ladder is…

A: Part (a) Given data: The mass of the student is m=75 kg. The calories to burn off is E=1 Calorie…

Q: You use a quantity of fuel with a total energy content of 19.02 MJ to power an engine. If the…

A: The objective of the question is to calculate the efficiency of an engine given the total energy…

Q: Q3 - 55 J of heat energy are transferred into an ideal gas and the gas does 40 J of work. What…

A: Since you have asked multiple question, we will answer the first question for you. If youwant any…

Q: A medium-sized banana provides about 105 Calories of energy. (a) Convert 105 Cal to joules. ?J…

A: Energy = 105 caloriesE = 105 * 4.18 JoulesE = 438.9 Joules

Q: Why do we not use brakes with more than 80% efficiency in automobiles? What should be the minimum…

A: we do not use brakes with more than 80% efficiency in automobiles

Q: A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal.  He wants to…

A:

Q: In the figure, a 3.2 g ice flake is released from the edge of a hemispherical bowl whose radius ris…

A: Mass, m = 3.2 g Radius, r = h = 19 cm = 0.19 m Initial speed, vi = 0.51 m/s

Q: A simple pendulum is suspended from the ceiling by means of a string and this time, the pendulum is…

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.