Answer:
(A) 
Explanation:
Given:
Charge of one particle (q₁) = -0.0050 C
Charge of another particle (q₂) = 0.0050 C
Separation between them (d) = 0.025 m
We know that, from Coulomb's law, electric force acting between two charged particles is given as:
Plug in the given values and solve for electric force, 
. This gives,
Therefore, option (A) is correct. Negative sign implies that the nature of electric force is attraction.
what about it do you need to know love?
Answer:
a) the total circle of "initial" is Epot./Eel. and the total circle of "final" is Ekin.
b)intia: 0.5 * 50 * 4^2 = 400 J
final: 0 J = 0.5 * 50 * 0^2
Explanation:
c) in the initial phase the spring is compressed and so has Epot but then the Energie changes to be totally Ekin (in final phase) and so the Epot becomes 0
Answer:
(b) Both are the same
Explanation:
When work is done to change a position or a state of motion, then the potential and kinetic energy are created. Then the energy gets transferred to an object. Its means the work is done.
The work done to change a position of an object is called potential energy while the work done to change a state of motion of an object is called kinetic energy.
We know that the total energy of a system remains constant. It is called the law of conservation of energy.
So, the work done is equal to the amount of PE or KE created. Hence, the correct option is (b).
