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alukav5142 [94]
3 years ago
12

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional

Physics
1 answer:
wolverine [178]3 years ago
8 0

The layers that make up the upper mantle are the following.

  • The lithosphere and the asthenosphere.
  • The lithosphere and the asthenosphere are the layers that make up the upper mantle.
  • The rocky outer part of the Earth is called the lithosphere.
  • It is very rigid, solid, and it is not as hot as the other parts.
  • According to scientists, its thickness is about 90 to 100 kilometers from the surface of the earth.
  • The layer of the Earth that moves the lithospheric plates is called the asthenosphere.
  • Lithospheric plates are 60 miles long on average and are composed of continental crust.

We conclude that the lithosphere and the asthenosphere are the layers that make up the upper mantle. The new lithosphere is being created at oceanic ridges due to plate tectonics. Yes, planet Earth is getting larger constantly.

Learn more about this topic here:

brainly.com/question/11292361?referrer=searchResults

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Workers do 8000 J of work on a 2000-N crate to push it up a ramp. If the ramp is 2 m high, what is the efficiency of the ramp?
IRISSAK [1]

Answer:

50%

Explanation:

Efficiency = work out / work in

e = Fd / W

e = (2000 N) (2 m) / (8000 J)

e = 0.5

7 0
3 years ago
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If 2.0 j of work Is done raising a 180 g Apple how far was it lifted
andrew11 [14]

The apple is lifted by 1.1 m

<u>Explanation</u>:

  • Given that, mgh = 2 J and mass of apple = 180g
  • Step 1: convert grams to kg as work is given in SI units.

                    180 g = 0.18 kg

  • Step 2: substitute in the formula for work done.

                    0.18 * 10 * h = 2

  • Step 3: calculate the value of h from this formula.

                      h = 2/1.8

                      h = 1.11 m

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3 years ago
Calculate the force it would take to accelerate a 250 kg motorcycle at a rate of 5m/s^2
bija089 [108]

1250 N of force is required to accelerate a 250 kg motorcycle at a rate of 5 m/s^{2}.

<u>Explanation:</u>

As per the second law of motion stated by Newton, the net unbalanced external force acting on any object is directly proportional to the product of mass and acceleration experienced by the object.

As here the object is given as motorcycle of mass 250 kg. Also the acceleration exhibited by the motorcycle is stated as 5 m/s^{2}. So from the Newton's second law of motion,

Net force = Mass of the motorcycle× Acceleration of the motorcycle

Net force = 250 × 5 = 1250 N.

Thus, 1250 N of force is required to accelerate a 250 kg motorcycle at a rate of 5 m/s^{2}.

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When I ride the train, the song of the train whistle is an example of the Doppler Effect. Because a train is at the center of sound waves it produces, which radiate in concentric circles around it, there is no difference between the sound heard by someone on the platform, and the sound of the train as heard by someone standing behind the caboose.
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Why does the moon have a stronger effect on tides than the sun?
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