2 years ago

How Fast Is Lightning?

1 answer:

8 0

The return stroke (the current that cause the visible flash) moves upward at a speed of about 320,000,000 ft per second or about 220,000,000 miles per hour (about 1/3 the speed of light).

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The strong nuclear force holds together which two particles in an atom?

Yanka [14]

Protons and neutrons are held together

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2 years ago

Que es entrenamientos físicos?

Gnesinka [82]

el uso sistemático de ejercicios para promover la aptitud física y la fuerza.

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2 equal charges, 27 micro Coulomb each, are separated by 5 cm. Find force between those.

padilas [110]

Answer:

The force between charges is $F= 2.624*10^3N$ .

Explanation:

The Coulomb force $F$ between the two charges $q_1$ and $q_2$ separated by distance $d$ is given by the equation

$F = k\dfrac{q_1q_2}{d^2}$

where $k$ is the coulombs constant, and has the value

$k= 9*10^9N\cdot C\cdot m^2$ .

Now in our case

$q_1=q_2=27\mu C =27*10^{-6}C$

and

$d= 5cm =0.05m$ ,

therefore, the Coulomb force between the charges is

$F =( 9*10^9N\cdot C\cdot m^2)*\dfrac{(27*10^{-6}C)(27*10^{-6}C)}{(0.05m)^2}$

$\boxed{ F= 2.624*10^3N}$

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2 years ago

What are the four main spheres of the earths ststem

vladimir2022 [97]

Answer:

"lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air)

Hope this helps

-Amelia

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2 years ago

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If you travel for three hours of a speed of 30 km/h, how far will you go?

lesya692 [45]

Answer:

90km

Explanation:

every hour you travel 30km and you are traveling 3 hours 30×3

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2 years ago