Answer:
Always equal to zero
Explanation:
In a action reaction two pair forces comes into play.
These forces are opposite in nature but equal. Suppose a pair of force is acting on any object.
Let the first force acting on one direction is -F
force acting on opposite direction = +F
If we sum these forces, -F + (+F) = 0
I am not 100% sure. But I believe it is B!
Your Welcome!
Answer:
Because they want attention
Answer:
3.974 Joule
Explanation:
Diameter of ring = 7.7 cm
a = Distance from the center = d/2 = 3.85 cm = 0.0385 m
Q = Charge = 5 mC
q = Charge to move = 3.4 mC
k = Coulomb constant = 9×10⁹ Nm²/C²
Work done will be equal to Potential energy when mass is at center
∴ Work to move a tiny 3.4 mC charge from very far away to the center of the ring is 3.974 Joule