3 years ago

(this is a question from my leap practice)

1 answer:

4 0

The answer is C. in sort of a way. You can't technically see black matter. However, it is holding the galaxies together.

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Which graph accurately shows the relationship between kinetic energy and mass as mass increases

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Explanation:

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3 years ago

This chart shows characteristics of three different waves all with the same wavelength of 10 m but moving at different frequenci

kap26 [50]

Answer:

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wave x has the highest hertz making it the answer

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3 years ago

A car takes 15 minutes to travel along a road that is 20 km long.

iogann1982 [59]

Answer:

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3 years ago

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I help much help on 18!!!

ra1l [238]

I think it's something like electrons don't attract, cuz you know the saying "Opposites attract." Cause electrons are negative... Ahaha... sorry, I don't know the answer.

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3 years ago

determine the force of gravitational attraction between a 78kg boy sitting 2 meters away from a 65kg girl.

bixtya [17]

Answer:

$F=8.45\times 10^{-8}\ N$

Explanation:

Given that,

Mass of a boy is 78 kg

Mass of a girl is 65 kg

We need to find the force of gravitational attraction between them if they are 2 m away.

The formula for the gravitational force is given by :

$F=\dfrac{Gm_1m_2}{r^2}\\\\F=\dfrac{6.67\times 10^{-11}\times 78\times 65}{(2)^2}\\\\=8.45\times 10^{-8}\ N$

So, the force between them is $8.45\times 10^{-8}\ N$ .

8 0

3 years ago