![Gabejenedu](/avatars/29572.jpg)
Gabejenedu
16.10.2019 •
Physics
You are reshelving books in a library. you lift a book from the floor to the top shelf. the kinetic energy of the book on the floor was zero and the kinetic energy of the book on the top shelf is zero, so no change occurs in the kinetic energy, yet you did some work in lifting the book. is the work–kinetic energy theorem violated?
Solved
Show answers
More tips
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- A Animals and plants How to Grow Lime from a Seed: Simple Tips and Interesting Facts...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Physics
- P Physics A rocket is fired in deep space, where gravity is negligible. If the rocket has a mass of 6000 kg and ejects gas at a relative velocity of 2000 m/s, how much gas must it...
- P Physics How far the first bright diffraction fringe is from the strong central maximum if the screen is 12.0 m away. Express your answer to three significant figures and include...
- P Physics A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 40.0 vibrations in 22.3 s. A given crest of the wave travels 369 cm along the...
- P Physics Erica needed to practice dribbling the ball up and down the length of the court. She divided to do it 10 times. How far did she dribble?...
- P Physics Cuales son las leyes del movimiento en el espacio?? mi tarea es para las 5 :(( ayuda...
- W World Languages Plese help, i need synonyms and antonyms for this italian words fast...
- M Mathematics The average attendance at a local high school s football games went down from 1800 people in 2003 to 500 people in 2004. What was the percent decrease in attendance at...
- M Mathematics 2 Drag each tile to the correct box.Find the decreasing functions and arrange them in order from least to greatest y-intercept.y = 2.5x + 10y = -0.5x + 0.5y = -4.5x + 3y =...
- E English gold in your ring is glittering.use a, an , the nothing article...
- H History 1. After the Emancipation Proclamation was announced, why was the Confederacy more determined than ever to fight?...
Ответ:
No, the theorem is not violated
Explanation:
No, it is not violated because the work done by gravitational force must also be taken into account. The force to lift the book at constant speed is the same as the gravitational force, i.e. the work done by the gravitational force (weight) is equal in magnitude but negative to the work done by the person to lift the book. (The work done by gravity is negative because displacement and weight have opposite directions).
So if we apply the theorem the work and kinetic energy, we have that the total work done in the book (work of the person plus the gravitational work) is equal to zero, and it is equal to the change of the kinetic energy. The theorem is fulfilled
Ответ:
To find how far the total trip was add the mileage of each part together:
150 miles + 275 miles + 185 miles = 610 miles total.