<span>According to accepted atomic models, the reason that metals are good conductors is because they have free electrons in their outer shell that are free to roam, therefore allowing for higher levels of conductivity than nonmetallic materials.</span>
Answer:
the girl's displacement in both magnitude and direction is 7.81 m at 50.2⁰ North west.
Explanation:
Given;
6km due west, and
5km due north
The magnitude of her displacement is calculated by forming a right angled triangle. The hypotenuse side of the triangle is the girl's displacement.
d² = 5² + 6²
d² = 25 + 36
d² = 61
d = √61
d = 7.81 m
The direction of the girl is calculated as;

Therefore, the girl's displacement in both magnitude and direction is 7.81 m at 50.2⁰ North west.
Answer:
Proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.