![bapehoodboi](/avatars/37537.jpg)
bapehoodboi
06.07.2019 •
Physics
Describe how kinetic and potential energy change as a diver climbs up to a diving board and then dives into the water below.
Solved
Show answers
More tips
- C Cities and Countries What time does the Metro open in Moscow?...
- T Travel and tourism How to Use a Compass: A Beginner s Guide...
- C Computers and Internet Porn Banner: What It Is and How to Get Rid Of It?...
- F Food and Cooking How many stages of coffee roasting are there?...
- F Food and Cooking From Latte to Espresso: Which Coffee Drink is the Most Popular on Earth?...
- F Food and Cooking Experts Name Top 5 Healthiest Teas...
- C Computers and Internet Google Search Tips and Tricks: Everything You Need to Know...
- H Health and Medicine Discover the Hidden Principles and Real Results of the Japanese Diet...
- H Health and Medicine Liver Cleansing - Rejuvenation for the Body?...
- S Style and Beauty Is Photoepilation the Solution to Unwanted Hair Forever?...
Answers on questions: Physics
- P Physics Visible light falls into wavelength ranges of 400-700 nm, for which 1 m = 1 × 10 9 nm . The energy and wavelength of light are related by the equation E = h c λ where E is energy...
- P Physics During the course of a demonstration the professor is called away. When he returns he finds a beaker of water that was at room temperature is now at a slightly higher temperature....
- P Physics Using the PhET Balancing Act, discuss the possibilities of balancing two forces acting on one side of a pivot point with a single force of the other. Select the best i. This is possible...
- P Physics Oxygen has an atomic number of 8. What can you conclude from this fact?...
- P Physics A car is traveling down the road at a speed of 50 miles per hour. The car goes around a slight curve while staying at 50 miles per hour. The car s speed . The car s velocity ....
- P Physics How much kinetic energy does a 0.30-kg stone have if it is thrown at 44 m/s? O 440J O 510 J O 580J 0 290...
- B Business A customer that wishes to open a new account is asked by the registered representative for a government issued photo identification. The customer gives the representative a copy of...
- C Computers and Technology How many statements are executed by the test suite? 7. What is the total number of statements? 8. What is the percentage statement coverage? % 9. How many branches are executed by...
- E English “Frank McCourt, Whose Irish Childhood Illuminated His Prose, Is Dead at 78:” How does the anecdote about McCourt assigning students to write “an excuse letter” in the paragraph below...
- B Business In the chapter about owning versus leasing, one set of examples compares the cost of owning versus the cost of leasing for Southside Clinic, a not-for-profit organization. The net...
Ответ:
A diver having mass m climbs up the diving board.
We know that Gravitational potential energy is given as PEG=mgΔh
What changes is his Gravitational potential energy due to change of height Δh with reference to the ground/water level.
While standing on the diving board his velocity is zero. As such kinetic energy is also zero.
Once he jumps off the springboard we see he gets additional energy from the springboard and falls down under action of gravity g. Due to decrease of height above the ground level Gravitational potential energy decreases and gets converted in to his kinetic energy. 1/2mv2.
While in air he encounters air resistance. Some of his energy is spent in overcoming this resistance. Gets converted in to kinetic and thermal energy of surrounding air and his body.
Once diver reaches the water, we see water splashing and hear noise of splash. Thereafter the diver comes to rest. Now his potential energy becomes zero. And converted kinetic energy has been converted in to kinetic energy, heat energy and sound energy of water.
As such energy transformation equation looks like
Gravitational PE+Elastic PE of springboard→Kinetic energy of air and water+Sound energy of splash+thermal energy
Ответ:
The 1st one is 0.19
The 2nd one is 0.45
It's right for both of them :)
Explanation: