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4 years ago

5

What is one cause of Erosion? How can it be prevented?

1 answer:

masha68 [24]4 years ago

7 0

The cause of erosion is Erosion is the process by which the surface of the Earth gets worn down. Erosion can be caused<span> by natural elements such as wind or glacial ice.

It can be prevented by [</span><span>use land according to its capability.protect the soil surface with some form of cover.<span>control runoff before it develops into an erosive force.</span></span>

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Which statements describe projectile motion? Check all that apply.

miv72 [106K]

In projectile motion we can say initial components of velocity is

$v_x = v_0 cos\theta$

$v_y = v_0 sin\theta$

now here horizontal motion is uniform motion as there is no force in this direction while in vertical direction due to gravity it will accelerate

so we have

$x = v_0 cos\theta * t$

$y = v_0 sin\theta * t - \frac{1}{2}gt^2$

so here we have x and y coordinates are related to each other as it will take same time to move the positions

so here correct options are

<em>Projectile motion is a combination of horizontal and vertical motion. </em>

<em>The horizontal and vertical motions of a projectile are dependent on each other.</em>

5 0

3 years ago

Read 2 more answers

What is the weight of an object with a force of 35 pounds ?

Inga [223]

Answer:

156 Newton I think if it's wrong correct me

7 0

3 years ago

What happens when aluminum fills its valence shell?

Juliette [100K]

I beileve the answer is B

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4 years ago

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How far would a spacecraft moving in a circular orbit 500 km above Pluto's surface travel during that time?

Ilia_Sergeevich [38]

Answer:

The speed of the spacecraft should be 719.35m/s

Explanation:

if the spacecraft is orbiting the planet with a circular orbit, the gravitational force must act as a centripetal force. This means:

$F_G=F_c\\\frac{GmM}{d^2}=m\frac{v^2}{d}$

In this case, the pluto's mass M is 1.3099·10^22 kg. The radius of the planet R is 1188.3Km and G is the gravitational constant. Therefore:

$\displaystyle\frac{G M}{d^2}=\frac{v^2}{d}\\v=\sqrt{\frac{GM}{d} } =\sqrt{\frac{GM}{(R + 500km)} } =719.35m/s$

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3 years ago

Some persons are counted as out of the labor force because they have made no serious or recent effort to look for work. However,

Sindrei [870]

Both the employment rate and labor force participation rate would be higher

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3 years ago