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3 years ago

Which of the following is the best definition of gravity?

2 answers:

8 0

In physics, gravity is the natural force that causes things to fall toward the earth. The noun gravity can also mean seriousness or solemnity. Someone who conducts themselves with an air of gravity is someone who takes what they are doing seriously.

Svet_ta [14]3 years ago

6 0

Answer: A natural force of attraction Earth exerts on objects which pulls objects toward Earths center

Explanation:

Option B

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Why is the moon’s surface cratered, but the Earth’s is not

Scorpion4ik [409]

The comets hit the moon's surface because there is no atmosphere on the moon to protect it. The earth has an atmosphere so it is protected.

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3 years ago

The energy transported by a mechanical wave is indicated by which property of the wave?

Ksenya-84 [330]

Your answer would be Amplitude :)

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3 years ago

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3 years ago

What are the foci of the ellipse given by the equation 100x^2 + 64y^2 = 6 400?

NikAS [45]

The equation of our ellipse is:

$100 x^2 + 64 y^2 = 6400$ (1)

First, let's reduce the equation of the ellipse to the standard form:

$\frac{x^2}{a^2}+ \frac{y^2}{b^2}=1$

To do that, we should divide both terms of equation (1) by 6400, and we get:

$\frac{x^2}{64}+ \frac{y^2}{100}=1$

This is a vertical ellipse (because $b^2 \ \textgreater \ a^2$ ) centered in the origin, and so the distance of its foci from the origin (on the y axis) is given by

$c= \sqrt{b^2-a^2}= \sqrt{(100)-(64)}=6$

Therefore, the position of the two foci is (0,6) and (0,-6)

8 0

3 years ago

Which of the following is NOT a possible type of law that a government could pass to help fight climate change?

vitfil [10]

Answer:

Explanation:

because people could lie about it

4 0

3 years ago