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vichka [17]
4 years ago
5

Geologists can learn about rock layers beneath the surface of Earth using sound waves. They use a vibration truck to send sound

waves into the ground. A measuring truck has special microphones, called geophones, that pick up sounds.This method for learning about rock layers depends on what characteristic of sound waves?A. Sound waves can travel through and reflect off rock layers.B. Sound waves require energy, such as electricity to generate them.C. Sound waves can travel for an unlimited distance from the source that creates them.D. Sound waves are absorbed by dense solids and reflect off liquids.
Physics
1 answer:
antiseptic1488 [7]4 years ago
6 0

Answer:

A. Sound waves can travel through and reflect off rock layers.

Explanation:

Reflection seismology is a process of "seeing" below the ground using artificial sources to create sound waves or the process of learning about rock layers beneath the surface of Earth using sound waves.

Sources on land, uses vibration trucks to shake the ground very powerfully to produce sound waves.

Thus, the sound waves will travel through the earth and reflect off rock layers having different acoustic properties. In order to record this reflections, we make use of a small instrument called geophones.

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Consider this situation: A bucket of water, attached to a rope, is being pulled upward out of a well. Of the forces listed, iden
Sergio039 [100]
I know that E.) Tension Force is one of them and B.) Gravity Force but I'm not sure about the others.
5 0
4 years ago
Determine the magnitude of the minimum acceleration at which the thief can descend using the rope. Express your answer to two si
iVinArrow [24]

Answer: hello your question is incomplete below is the missing part

A 69-kg petty thief wants to escape from a third-story jail window. Unfortunately, a makeshift rope made of sheets tied together can support a mass of only 58 kg.

answer:

To 2 significant Figures = 1.6 m/s^2

Explanation:

<u>Calculate the magnitude of minimum acceleration at which the thief can descend </u>

we apply the relation below

Mg - T = Ma  --- ( 1 )

M = 69kg

g = 9.81

T = 58 * 9.81

a = ? ( magnitude of minimum acceleration)

From equation 1

a = [ ( 69 * 9.81 ) - ( 58 * 9.81 ) ] / 69

  = 1.5639 m/s^2

To 2 significant Figures = 1.6 m/s^2

8 0
3 years ago
A jogger moves from a position x =
vlada-n [284]

Answer:

3 m/s

Explanation:

We'll begin by calculating the change in displacement of the jogger. This can be obtained as follow:

Initial displacement (d₁) = 4 m

Final displacement (d₂) = 16 m

Change in displacement (Δd) =?

Δd = d₂ – d₁

Δd = 16 – 4

Δd = 12 m

Finally, we shall determine the determine the average velocity. This can be obtained as follow:

Change in displacement (Δd) = 12 m

Time (t) = 4 s

Velocity (v) =?

v = Δd / t

v = 12 / 4

v = 3 m/s

Thus, the average velocity of the jogger is 3 m/s

5 0
3 years ago
a teacher drives from school to the mall. then she goes to the doctors office for a physical examination. what is the magnitude
Amanda [17]

The magnitude of the teachers displacement is the difference between

the location of the school and the location of the doctors office

The reason behind the above expression are explained as follows

The known locations of the teacher;

Initial location; The school

Second location; The mall

The eventual location; The doctors office

The required information;

The magnitude of the teachers displacement

The method of obtaining the displacement of the teacher;

Qualitatively, the displacement of the teacher can be obtained by applying the definition of displacement as follows;

The definition of displacement is an object's change in position, given by the difference between its start and finish locations

According to the definition of displacement, therefore, the magnitude of

the teachers displacement is the distance between the school and the

doctors office which is given by the difference between the coordinates of

the location of the school and the location of the doctors office

The magnitude of the displacement of the teacher = The coordinate of the location of the doctors office - The coordinate of the location of the school

Learn more about displacement here;

brainly.com/question/17587058

5 0
3 years ago
What determines color in the visible light region of the electromagnetic spectrum?
anyanavicka [17]

Answer:

In the electromagnetic spectrum, "Blue" is the "highest" frequency color of visible light.

Or In the electromagnetic spectrum, "Red" is the "Lowest" frequency color of visible light.

Hope this helps!

7 0
4 years ago
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