Which natural resource is renewable? Coal Wind Topsoil Oil
2 answers:
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Answer:
16.5 kwh and 59400 kJ.
Explanation:
kWh is a measure of energy that is equivalent to the power in kw times the number of hours the device worked.
In this case, it would be equal to:
1 kw also means 1kj of energy spent per second. With this, we calculate the amount of energy in kJ spent by the resistance:
1) First of all, we need to find the distance between the two charges. Their distance on the xy plane is
substituting the coordinates of the two charges, we get
2) Then, we can calculate the electrostatic force between the two charges
and 
, which is given by
where
is the Coulomb's constant.
Substituting numbers, we get
and the negative sign means the force between the two charges is attractive, because the two charges have opposite sign.
substituting the coordinates of the two charges, we get
2) Then, we can calculate the electrostatic force between the two charges
where
Substituting numbers, we get
and the negative sign means the force between the two charges is attractive, because the two charges have opposite sign.