A pendulum has 576 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing?

Answers

Answer 1

Answer: Ideally, 576 J because energy is conserved.
In the real world, a tiny tiny tiny tiny bit less than 576 J ,
because we live in a world with friction and air resistance.

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In a 4*100m relay race,tota track length is 200m and time taken by one particular group is 50.2sec. ehat is the average speed and average velocity of that group?plzzzz help mee

Answers

This is tricky, and the question could probably be written more clearly.

A " 4 x 100 m " race means that four runners each run 100 meters, for
a total of 400 meters ... very close to a quarter mile.

On a 200-meter track, each runner does halfway around the track, and
the whole team of four runners does twice around the track.

This team did the whole thing in 50.2 seconds. The average time for each runner
was 50.2/4 = 12.55 seconds.

Velocity is a speed and a direction. We have the speed, leaving only the puzzle of
what to do about the 'average' direction.

Here's a sneaky but easy way to dispense with the whole issue:
Define the average velocity (vector) as (total displacement vector)/(total time).

Since the fourth runner finished in exactly the same spot as the first runner
began, the total displacement is zero, and therefore so is the average velocity.

What is the French word for shepherds crook

Answers

The answer would be:

Houlette de berger.

"shepherd's crook" means "houlette de berger" in french

A substance has a melting point of 0 degrees celsius and a boiling point of 100 degrees celsius. The substance is most likely a.) water
b.) hydrogen
c.) gold
d.) table salt

Answers

The correct answer is A. The parameters laid out here describe water,which has a melting point of 0 degrees Celsius and a boiling point of100 degrees Celsius. These descriptors are not true of any of thealternative answers.

In a clarinet, the reed end of the instrument acts as a node and the first open hole acts as an antinode. because the shape of the clarinet is nearly cylindrical, its harmonic series approximately follows that of a pipe closed at one end. What harmonic series is predominant in a clarinet?

Answers

The first and the third harmonics are predominant because they produce odd partials.

We know that the clarinet is a wind instrument. Wind instruments are those instruments that produce sound when a column of air is vibrated inside the instrument.

The clarinet closely follows the harmonics of a pipe that is open at one end. Hence, the first and the third harmonics are predominant because they produce odd partials.

Learn more about harmonics: brainly.com/question/1984022

The first and third, because it only produces odd partials.

What is reflection? Reflection is light that has struck a surface and has __________. . gained energy.
been transmitted.
bounced off .
been absorbed

Answers

The correct answer should be bounced off since the light ray hit the surface and reflected towards a new location. It therefore bounced off.

Correct answer choice is :

C) Bounced off

Explanation:

Reflection is the difference in the path of a wavefront at an interface within two various media so that the wavefront returns into the tool from which it began. Current models involve the reflection of light, sound and water waves. Reflection is when light bounces off an object. If the cover is soft and shiny, like glass, water or bright metal, the light will reflect at the same point as it hit the cover.

How dose an atom become an ion with a -2 charge?

Answers

A atom can become an ion with a -2 charge, if it gains 2 electrons during a chemical reaction.

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