1)a 2)D 3)a. I think the answers are
ANSWER:
C. Small, minimize
Hope it helps u!
Answer:
- 2.7 x 10^-6 J
Explanation:
q1 = 1 nC at x = 0 cm
q2 = - 1 nC at x = 1 cm
q3 = 4 nC at x = 2 cm
The formula for the potential energy between the two charges is given by

where r be the distance between the two charges
By use of superposition principle, the total energy of the system is given by



U = - 2.7 x 10^-6 J
The first step of the scientific method is to MAKE OBSERVATIONS
Sodium and potassium are positively charged ions called cations, and chloride and phosphate form negatively charged ions called anions. is true!