Answer:
F = 0N
Explanation:
The force between two charges is given by

where r is the distance between the charges and K is the Coulomb's constant
(k=8-89*10^9Nm^2/C^2)
The force in the first charge is only the sum of the forces due to the other charges. Hence we have


Ft=0N
Hope this helps!!
B. -273°C - Absolute Zero
Answer:
0 J
Explanation:
The mechanical energy of a spring is given by
where k is spring constant and x is extension of spring. Since the spring is unstretched, its extension is zero.
#Notice that the potential energy is 0.
-Substituting spring constant, k with 8 and extension with zero then the mechanical energy will be
