Through which substance will sound travel fastest?
the ground
the ocean
the air

Answers

Answer 1

Answer:

Sound waves travel fastest through the ground.

What is meant by a longitudinal wave ?

A longitudinal wave is a form of wave in which the medium vibrates parallel to the direction of the wave.

Here,

The displacement of the medium moves with the wave motion in the same direction.

Sound waves are longitudinal waves because, the direction of the energy transport is parallel to the oscillations of the sound waves.

Since, it is created by compressions and rarefactions in the air, sound waves are known as longitudinal waves. The air particles vibrate in a direction that is parallel to the direction of propagation.

The sound waves require a medium to propagate.

Solids and liquids have the quickest sound wave propagation rates, whereas gases have the slowest. Gases are very loosely packed while liquids are not as securely packed as solids. Sound moves through solids much more quickly than it does through gases due to the distance between the molecules.

Hence,

Sound waves travel fastest through the ground.

To learn more about longitudinal wave, click:

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Answer 2

Answer:

Answer: The correct option is the ground.

Explanation:

Sound is a longitudinal wave. In longitudinal wave, the particles vibrate parallel to the direction of the propagation of the wave.

It needs medium to travel. It can travel in solid, liquid and gas.

Sound wave travels faster in solid in comparison to liquid.

It travels slowest in air.

Ground is a denser medium. Here, the sound wave travels faster in comparison to the ocean and the air.

Therefore, the correct answer is the ground.

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An extended period when temperatures are well below average is known as a/an A. drought.
B. ice age.
C. cold wave.
D. draft.

Answers

It would be a cold wave.
Ice ages occur when the temperatures are extremely cold.(long-term)

Depends on the "period". If weeks, months, or years, then it's a cold wave. If centuries, then you've got yourself an ice age.

(PLEASE HELP) Identify the following as electromagnetic (E) or mechanical (M) waves.sound waves

water waves

radio waves

ultraviolet waves

waves in a wheat field

Answers

Answer;

Mechanical waves;

sound waves
waves in a wheat field
water waves

Electromagnetic waves

Radio waves
Ultraviolet

Explanation;

A wave is a transmission of a disturbance from one place, the source to another.
Waves can be classified as mechanical waves or electromagnetic waves depending on the requirement of a material medium.
Mechanical waves are those waves that require a material medium for transmission, they include, sound waves, water waves, etc. The transmission of these waves is by vibration of particles in the medium.
Electromagnetic waves are those waves that do not require a material medium for transmission.They include, radio waves, microwaves, and all the waves in the electromagnetic spectrum.

sound waves (m)

water waves (m)

radio waves (e)

ultraviolet (e)

waves in a wheat field (m)

Which of these diagrams best represents the steps in the formation of planets? A) The sun is born > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born
B) The clouds flatten into a disc > The sun is born > The clouds condense > the planets are born
C) The clouds of dust and gases rotate at high speed > The clouds condense > The sun is born > The planets are born
D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born

Answers

Answer:

D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born

Explanation:

Planets are formed from Planetary nebula. The cloud of dust and gases condenses under its own weight. The condensed matter starts rotating at high speeds and gathers more mass. The core forms the star and rest of it eventually flattens into an elliptical disc from which planet is born. Thus, the correct sequence is: D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born.

The right answer for the question that is being asked and shown above is that: "C) The clouds of dust and gases rotate at high speed > The clouds condense > The sun is born > The planets are born " This is the diagram that best represents the steps in the formation of planets

A stone is dropped from a bridge and hits the pavement below in two seconds. What is the velocity of the stone when it hits the pavement?A. 0.20 m/s
B. 19.6 m/s
C. 4.9 m/s
D. 9.8 m/s

Answers

We have: a = v/t
Here, t = 2 s [ Given ]
a = 9.8 m/s² [constant value for earth system ]

Substitute their values into the expression:
9.8 = v/2
v = 9.8 × 2
v = 19.6 m/s

In short, Your Answer would be Option B

Hope this helps!

i just did the quiz and so the only 2 options that made logical sense would be B (19.6 m/s) or D (9.8 m/s) the reason someone could get confused between these two is because 19.6 divided by 2 is 9.8 m/s so for each second it will go down 9.8 m/s but since it wants to know the velocity it would be 19.6 m/s

hope this helps

If an object looses electrons, then have been transferred

Answers

if a neutral object loses some electrons, then it will possess more protons

a car is moving with a constant speed of 20 meters per second.What total distance does the car travel in 2 minutes

Answers

There are 120 seconds in two minutes, so to find the answer, you multiply 20 x 120 to get 2400 meters.

Final answer:

The car travels a total distance of 2400 meters in 2 minutes at a constant speed of 20 meters per second.

Explanation:

Distance is the measurement of space between two points, typically in terms of length or spatial separation. It is a fundamental concept used in various fields, including physics, geography, and mathematics.

To find the total distance travelled by the car in 2 minutes, you need to calculate the distance covered in 1 second and then multiply it by the number of seconds in 2 minutes.

Since the car is moving at a constant speed of 20 meters per second, the distance covered in 1 second is 20 meters.

To find the total distance, multiply 20 meters by 60 seconds (1 minute) and then again by 2 (number of minutes).

The total distance travelled by the car in 2 minutes is 2400 meters.