![countrygirlbookworm2](/avatars/39138.jpg)
countrygirlbookworm2
26.10.2019 •
Physics
Why does the pendulum in the diagram eventually come to a stop?
a. friction with the air converts kinetic energy to thermal energy.
b. the energy is slowly converted into matter in the form of air.
c. friction with the air converts potential energy to thermal energy.
d. the energy is slowly destroyed by the movement of the pendulum.
Solved
Show answers
More tips
- C Computers and Internet How to Download Movies from Torrents?...
- F Food and Cooking How to Make the Perfect Glühwein: Step-by-Step Guide...
- A Animals and plants How to Grow Lime from a Seed: Simple Tips and Interesting Facts...
- S Style and Beauty How to Properly Tie a Tie: 5 Simple Steps...
- C Computers and Internet Dynamically Assigned IP Address: What Is It and How Does It Work?...
- C Computers and Internet How to Check the Speed of My Internet?...
- H Health and Medicine 5 Simple Steps to Quit Smoking for Good...
- C Computers and Internet How to Download Videos from YouTube? Simple Steps to Download Any Content...
- H Health and Medicine What is the Normal Blood Sugar Level in a Healthy Person?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
Answers on questions: Physics
- P Physics My tooth is aching. Change the noubs on the following sentence in plural and rewrite......
- H History PLEASE HELP will mark BRAINLIEST I’m soo tired so if you know lord Anthony Ashley coopers perspectives on government please please help me ASAP...
- M Mathematics The ratio of taiki to flamas is 9 to 16 how many taki are on the shelf...
- S Social Studies Identify and explain one piece of historical evidence that would support smith s interpretation of europe s interaction with the americas...
- S Spanish 9 Escribe cada polinomio en orden ascendente del grado de la variable y, luego, en orden descendente.(2 pts. c/u). 4+x2 - 6x3.2...
Ответ:
C. Friction with the air converts potential energy to thermal energy.
Explanation:
In the motion of the simple pendulum, in absence of air resistance, the total mechanical energy (kinetic+potential) is conserved, so the initial potential energy of the pendulum when it is released is converted into kinetic energy when the pendulum passes the lowest point, then again into potential energy as the pendulum reaches the maximum height, and so on. In this mechanism, the motion of the pendulum continues forever, since the energy is conserved.
In a real world, this does not happen: in fact, the pendulum slows down and eventually stop. The initial potential energy, however, has not been "destroyed": the law of conservation of energy states in fact that energy cannot be created or destroyed, but only transformed.
In this case, it has been transformed into thermal energy. In fact, in the real world the pendulum is moving through the air: as it passes through the air, there is friction acting on the surface of the pendulum, and because of this, part of the mechanical energy of the pendulum is "wasted" and converted into thermal energy (the temperature of the air surrounding the pendulum increases). As a result, at the end, the pendulum loses all its initial energy and it stops.
Ответ:
A=48 CM2
Explanation:
A=9 X 10
A=90 CM2 9-2=7
A=6 X 7
A=42 CM2
A=90-42
A=48CM2