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3 years ago

Which of the following characteristics of Earth's crust is likely to contribute to geological events?

Physics

1 answer:

olganol [36]3 years ago

8 0

Answer:A

Explanation:

The crust Of The earth's has plates boundaries,when the layers that forms to boundaries glide on each other, vibrations occur which are known as earthquakes

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1. What do you meant by vibrations?

Marysya12 [62]

Answer:

here are you answers

Explanation:

Answer-1 these are the waves that produced by oscillations.

Answer-2 another word for larynx is voice box.

Answer-4 standard unit of frequency is Hertz (Hz)

5 0

3 years ago

4. An object is moving with an initial velocity of 9 m/s. It accelerates at a rate of 1.5

Nata [24]

Answer:

11.9 m/s

*But if you need the answer with sig figs it should be 10m/s (1sf) or 12m/s (2sf)

Explanation:

${vf}^{2} - {vi}^{2} = 2ad$

${vf}^{2} = 2ad + {vi}^{2}$

${vf}^{2} = 2 \times 1.5 \times 20 + {9}^{2}$

${vf}^{2} = 60 + 81$

${vf}^{2} = 141$

$vf = \sqrt{141}$

$vf = 11.874$

best answer if it worked

3 0

3 years ago

A 50.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300 and the

Vitek1552 [10]

Answer:

147 N

Explanation:

static friction = frictional force max / normal

normal force = mg = 50 kg × 9.8 m/s² = 490 N

0.3 = Frictional force / 490 N

0.3 × 490 N = 147 N

The body will not move because the frictional force is greater than the force applied.

4 0

3 years ago

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How does friction act as an unbalanced force for objects in motion?

julsineya [31]

Friction is a force that acts in a direction opposite to motion. If there were not force of friction, a baseball player would never stop and would be continuously moving in the direction of motion. Balanced forces do not cause a nonmoving object to start moving.

8 0

3 years ago

As light slows down, it bends or refracts. The index of refraction helps predict the amount of bending. How are the speed of lig

Eduardwww [97]

When light changes the medium it travels through it also changes speed. The speed in medium is given by formula:
$v_{medium} = \frac{c}{ n_{medium} }$

Rearranging formual gives:
$n_{medium} = \frac{c}{ v_{medium} }$

From this formula we can make conclusion that index of refraction is inversely proportional to speed of light in medium. This means that greater speed gives smaller index of refraction.

8 0

4 years ago

Read 2 more answers