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borishaifa [10]
3 years ago
6

Can someone please Help me with this? It’s Due today

Physics
1 answer:
kirza4 [7]3 years ago
6 0

helium group no val elect

mg is reactive when activated. when burned, very intense

pot\asssium 1 valence elect ... KCl eg

theone with H and sodium in it

http://perendis.webs .com

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3 years ago
The sun is more massive than the moon, but the sun is farther from the earth. Which one exerts a greater gravitational force on
love history [14]

Answer:

178.4 times

Explanation:

We have Newton formula for attraction force between 2 objects with mass and a distance between them:

F_G = G\frac{M_1M_2}{R^2}

where G =6.67408 × 10^{-11} m^3/kgs^2 is the gravitational constant on Earth. M_1, M_2 is the masses of the 2 objects. and R is the distance between them.

From here we can calculate the ratio of gravitational force between the moon and the sun

\frac{F_s}{F_m} = \frac{G\frac{MM_s}{R_s^2}}{G\frac{MM_m}{R_m^2}}

We can divide the top and bottom by G and M

\frac{F_s}{F_m}= \frac{M_s}{R_s^2}:\frac{M_m}{R_m^2}

= \frac{M_s}{R_s^2}\frac{R_m^2}{M_m}

= \frac{M_s}{M_m}(\frac{R_m}{R_s})^2

= \frac{1.99*10^{30}}{7.35*10^{22}}(\frac{3.85*10^8}{1.5*10^{11}})^2

= 27074830*6.59*10^{-6} = 178.4

So the gravitational force of the sun is about 178 times greater than that of the moon to an object on Earth

5 0
3 years ago
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