4 years ago

Which of the following is a balanced chemical equation?

Physics

1 answer:

Natalija [7]4 years ago

5 0

Explanation:e=mwS

<em>and also yes it is i think </em>

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Ksju [112]

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Your friend wants to join the school track team, and has asked for your help to determine how fast she can run. What kind of inf

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you calculate a specific type of run for example 100m and it takes 20 seconds to finish and calculate the time it takes them to finish

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3 years ago

A man is walking away from a lamppost with a light source h = 6 m above the ground. the man is m = 2 m tall. how long is the man

Llana [10]

Answer;

= 4 m is the length of the man's shadow.

Explanation;

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3 years ago

Imagine that the earth and the-moon have positive charges of the same magnitud. How big isäºthe charge necesary to produce an el

lions [1.4K]

Answer:

5.7 x 10^12 C

Explanation:

Let the charge on earth and moon is q.

mass of earth, Me = 5.972 x 10^24 kg

mass of moon, Mm = 7.35 x 10^22 kg

Let d be the distance between earth and moon.

the gravitational force between them is

$F_{g}=G\frac{M_{e} \times M_{m}}{d^{2}}$

The electrostatic force between them is

$F_{e}=\frac{Kq^{2}}{d^{2}}$

According to the question

1 % of Fg = Fe

$0.01 \times 6.67\times10^{-11}\frac{5.97 \times 10^{24}\times7.35 \times 10^{22}}{d^{2}}=9 \times 10^{9}\frac{q^{2}}{d^{2}}$

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3 years ago

What is an example of kinetic energy

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An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity.

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