Which is occurring when work is being done? energy is being reverted. energy is being decreased. energy is being increased. energy is being transferred.?

Answers

Answer 1

Answer:

The work is an effect that is observed due to the application of force. Taking the concern of work-energy principle, the work is done when there is a transfer of energy take place.

What is Work Done?

When some magnitude of the force is being applied on an object to displace, then the term used to describe the effect is known as work done.

The mathematical expression for the work done is given as,

W = F × d

here,

F is the magnitude of applied force.

d is the displacement.

If we compare work with energy then, Energy, on the other hand, is the ability to do work. According to the work-energy principle, a change in the kinetic energy is equivalent to the net work done by the object. Therefore, energy is being transferred from one point to another when work is being done.

Thus, we can conclude that the work is done when a transfer of energy takes place.

Learn more about the work done here:

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Answer 2

Answer:

Answer;

Energy is being transferred

Explanation;

Work is the force applied over a given distance, in other words work is the product of force and distance.

Work = force × distance.

Work is measured in Joules.

Energy on the other hand, is the ability to do work.
According to the principle of work-energy a change in the kinetic energy is equivalent to the net work don e by the object. Therefore, when work is being done energy is being transferred from one point to another.

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The splitting of an atom to produce energy is called a ________ reaction.a. fusion
b. fission
c. physical
d. chemical

Answers

The correct answer is fission.

Answer: The answer to this question is fission

Explanation: Can I get brainliest

How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?Note: This is for Parallel circuits.

Answers

The current values in and out of the battery is going to be equal to the sum of the currents going through the light bulbs. In a parallel circuit, the current is divided as it enters different branches and light bulbs. However, the amount of current leaving the battery is always going to be the same as the amount of current entering the battery. Therefore, while current divides in a parallel circuit, the total amount of current always remains the same.

Question #4 Multiple Choice Which of the following is a similarity between an industrial metrologist and a legal metrologist? Both are employed by private companies Both ensure confidence in the quality of measurements Both ensure adequate functioning of measurement instruments Both develop measurement standards based on research

Answers

Answer:

choice B

Explanation:i took the test

Answer:

ITS D

Explanation:

if its wrong i will comeback and re do it

The doppler effect is the change in observed frequency due toa. the type of medium the wave is in
b. the type of wave
c. the original frequency of the source
d. the motion of the source or observer

Answers

d. the motion of the source or observer

I believe the answer is D, im not 100% sure though.

If a train is 100 km away, how much sooner would you hear the train coming by listening to the rails (iron) as opposed to listening for it standing by the track? In other words, how much faster will the sound travel through the iron rails than through the air? Assume the air temperature is 0°C.Sound will reach you ______ seconds sooner.

302

324

280

Answers

Wellll . . . it's doubtful that you'd hear the sound of a train
from 100 km away (about 62 miles), but this is a fun problem
so let's go through it just for the math.

Online, I looked up the speed of sound in various materials.
Here's what I found:

-- Speed of sound in normal air . . . . . 343 m/s

-- Speed of sound in iron . . . . . 5,130 m/s

But let's go a little farther !
Rails used to be made of cast iron or wrought iron.
But now they're made of hot rolled steel.

-- Speed of sound in steel . . . . . 6,100 m/s

   Time to cover the distance = (distance) / (speed)

   Time through air = (100,000 m) / (343 m/s)

   = 291.5 sec = 4 minutes 51.5 seconds

Time through old iron rails = (100,000 m) / (5,130 m/s)

   =   19.5 seconds (272 sec sooner)

Time through new steel rails = (100,000 m) / (6,100 m/s)

   = 16.4 seconds   (275 sec sooner)

Final answer:

The speed of sound varies in different mediums. In Physics, the speed of sound in air at 0°C is about 331.5 m/s, while in iron it's about 5130 m/s. If a train is 100 km away, the sound travelling through the iron rails would reach you approximately 282 seconds sooner than the sound through the air.

Explanation:

In Physics, the speed at which sound travels depends on the medium through which it's travelling. The speed of sound in air at 0°C is approximately 331.5 m/s. On the other hand, the speed of sound in iron is about 5130 m/s.

To determine how much sooner you would hear the train, we need to calculate the difference in time it takes for the sound to travel through these two mediums.

When the train is 100 km away, we get the following:

Time through air: 100000 m / 331.5 m/s = 301.66 seconds
Time through iron: 100000 m / 5130 m/s = 19.49 seconds

The difference is, therefore, approximately: 301.66 - 19.49 = 282.17 seconds. Thus, the sound will reach you 282 seconds sooner if you listen to the rails rather than the air.

Learn more about Speed of Sound here:

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Is time a

vector,
scalar,
both,
neither

Answers

Answer: scalar

Explanation:

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