As we know the property of charge that charge is always conserved
so we can say

here we know that total charge is

and we also know that

from above equation we can say


so the other charge will be -6 C
A.) attract to each other
Answer:
<h2>3000 J</h2>
Explanation:
The kinetic energy of an object can be found by using the formula

m is the mass in kg
v is the velocity in m/s
From the question
m = 60 kg
v = 10 m/s
We have

We have the final answer as
<h3>3000 J</h3>
Hope this helps you
Answer:

Explanation:
Maximum speed is get at maximum power. Let assume that ship travels at constant speed, the expression for power is equal to:

Where
and
are the forward force and speed of ship measured in newtons and meters per second, respectively.
The forward force can be determined by clearing it in the expression described above:



Revolution means orbiting around another body.
<span>A year is the time for a planet to complete one orbit around the Sun. 100% sure
</span>