F=147N;
Acceleration=9.8m/s2;
Mass=15kg
The total charge on the sphere is 
Explanation:
The total charge on the metal sphere is given by:

where
Q is the total charge
n is the number of electrons on the sphere
q is the charge of each electron
Here we have:
is the number of electrons on the sphere
is the charge of each electron (negative)
Therefore, the total charge on the spheres is

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<span> Space satellites, laser beams, mirrors</span> are used to calculate the distance a continent has moved in a year.
Therefore, your correct answer would be "all of the above".
Answer:
Conduction, radiation and convection all play a role in moving heat between Earth's surface and the atmosphere. Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface