7g ≥ 698mg is the answer
7g = 7000mg
0.698 = 698
Answer:
B = 0.025T.
Explanation:
See attachment below please.
Answer:
<em>b. At twice the distance, the electric potential is V/2</em>
Explanation:
Electric potential
Is the amount of work needed to move a unit charge from a reference point (usually a point at infinity) without producing acceleration.
The electric potential due to a point charge q at a distance r is given by
Where K is the Coulomb's constant. If we know the electric potential at a certain distance is V, if the distance is changed to 2r, then the new potential is
It means that the electric potential is half the previous value. Correct option: b.
An isolated system , it does not allow any matter or energy to be exchanged