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3 years ago

A.

Physics

2 answers:

Elanso [62]3 years ago

3 0

Answer:

Well, their are two answers in their. It would be Ask their Parent for assistance in persuading and Ask for an opportunity to earn extra credit:)

Explanation:

serious [3.7K]3 years ago

3 0

Answer:

Ask for an opportunity to earn extra credit.

You should never beg a teacher to change your grade or to retake a test.

The best option would be to take an extra credit assignment to boost your grade. This will help you academically and personally.

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The formula v=fλ describes how sound can change. Please explain what these components are, and how they affect one another.

Svetlanka [38]

Answer:

Explanation:

Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.

An electromagnetic spectrum refers to a range of frequency and wavelength that an electromagnetic wave is distributed or extends. The electromagnetic spectrum comprises of gamma rays, visible light, ultraviolet radiation, x-rays, radio waves, and infrared radiation.

Wavelength can be defined as the distance from one peak to the next peak. Also, this distance is equal to the distance from one trough of a wave to another.

Mathematically, the speed of a wave is given by the formula;

V = fλ

Where;

V is the speed of the wave.

f is the frequency of the wave.

λ is the wavelength of the wave.

The speed of a wave (wave speed) is directly proportional to the frequency of a wave.

This ultimately implies that, an increase in the speed of a wave would cause an increase in the frequency of a wave and vice-versa.

8 0

2 years ago

Based on the diagram below, rank the three objects from least dense to most dense

Elodia [21]

I believe it is c because the least dense would be on top. so x is least dense, then y, and then z

6 0

3 years ago

In which one(s) of the following situations will there be an INCREASE in Kinetic Energy? Group of answer choices A block slides

Maksim231197 [3]

Answer:

The Kinetic Energy INCREASE in the following situations:

a)A block slides down a frictionless incline:

e)A merry go round rotates faster due to the push by a person.

Explanation:

The energy kinetics is proportional to the square of the velocity:

$E_k=1/2*mv^2$

We study the cases:

a)A block slides down a frictionless incline:

The gravity made a positive work and the box get a extra velocity, then the kinetics energy INCREASE

b)A box is pulled across a rough floor at constant speed:

The magnitude of the velocity does not change, so the kinetics energy does not change as well

c)A stone at the end of a string is whirled in a horizontal circle at constant speed:

The magnitude of the velocity does not change, so the kinetics energy does not change as well

d)A projectile approaches its maximum height:

If the projectile approaches its maximum height, its velocity approaches to zero. Then the kinetics Energy DECREASE

e)A merry go round rotates faster due to the push by a person.

Thanks to the push, the magnitude of the velocity INCREASE, so the kinetics energy INCREASE as well

6 0

3 years ago

The collective body of observations of a natural phenomenon on which scientific explanations are based is called?

zhenek [66]

Experimental Evidence.

Scientists conduct experiments or observations to gather evidence that either support or disprove a given hypothesis. Hence, all the scientific explanations are based on this body of observations.

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2 years ago

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Can anyone plzzzz answer this question... Cuz it's really urgent....

nlexa [21]

The fastest in speed of sound is steel. The slowest in speed of sound is oxygen. Hope this helped! I don't really know how to answer this but by looking at the table it looks like this can be one of the conclusions.

4 0

3 years ago

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