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nirvana33 [79]
3 years ago
13

Compared to the thickness and density of the continental crust of South America, the oceanic crust of the Pacific floor is______

_______.
Physics
1 answer:
chubhunter [2.5K]3 years ago
3 0

Answer:

The pacific floor (oceanic crust) is thinner and more denser

Explanation:

The continental crust have a thickness of about 35 to 40 km on an average, and are composed of rocks that has less denser granitic minerals such as feldspar, quartz.

On the other hand, the oceanic crust have a thickness of about 7 to 10 km on an average, and it is comprised of denser mafic rocks that contains high amount of olivine and pyroxene minerals.

Due to this, the oceanic crust subducts below the continental crust during the time of collision.

Thus, the pacific floor (oceanic crust) is thinner and more denser, in comparison to the South American continental crust.

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Answer:

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Explanation:

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2 years ago
Suppose a radar gun sends out radio waves with a frequency of 2,000,000.0 Hz. The waves bounce off a moving car and return with
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Answer:

300,000,030m/s

Explanation:

Using the relationship between frequency and speed of a wave;

F ∝ V

F = kV

k = F/V

F1/V1 = F2/V2 = k

Let F1 be the frequency of the radio wave = 2,000,000.0Hz

V1 be the speed of light = 300,000,000m/s

F2 = frequency produced by the car = 2,000,000.2Hz

V2 be the velocity of the moving car

Substituting this values in the equation above;

2,000,000/300,000,000 = 2,000,000.2/V2

Cross multiplying

2,000,000V2 = 300,000,000×2,000,000.2

2V2 = 300×2,000,000.2

V2 = 150×2,000,000.2

V2 = 300,000,030m/s

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6 0
3 years ago
When two positive charges are brought close together, what happens to the
telo118 [61]

Answer:

they will move away from each other

7 0
3 years ago
How much force does a soccer goalie
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2 N

Explanation:

From the question, it's given that

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Substitute all the parameters into the formula

F = 0.2 × 10

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Two separate but nearby coils are mounted along the same axis. A power supply controls the flow of current in the first coil, an
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b.only when the current in the first coil changes.

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