Answer:
<em>c. because the rod polarizes the metal.</em>
Explanation:
Bringing the negatively charged rod close to the neutral metal ball causes the neutral metal ball to be polarized with induced positive charge on it. The polarizing of the formally neutral metal ball is due to the negative charge on the metal rod (bodies induce a charge opposite of their own charge on a nearby neutral body). The ball and rod then attract themselves because bodies with opposite charges attract each other, unlike bodies with same charges that repel each other.
Answer:
intinal speed should be 10
Explanation:
v = v0 + at
30 = v0 +10.2
then v0= 10
Answer:
Q₂ = (9.83 × 10⁻⁹) C = +9.83 nC
Explanation:
The force of attraction/repulsion between the two charges is equal to the force of gravity on the charge 2.
The force of gravity on the charge two = mg
= 6.5 μg × 9.8 m/s² = (6.37 × 10⁻⁵) N
Since the gravity force is directed downwards, the force on charge 2 due to charge 1 has to be directed upwards, hence it is a force of repulsion.
The magnitude of the force between the two charges is given according to the Coulomb's law.
F = kQ₁Q₂/r²
k = Coulomb's constant = (9.0 × 10⁹) Nm²/C²
Q₁ = 45 nC = (45 × 10⁻⁹) C
Q₂ = ?
r = 25 cm = 0.25 m
F = (6.37 × 10⁻⁵) N
(6.37 × 10⁻⁵) = [(9.0 × 10⁹) × (45 × 10⁻⁹) × Q₂] ÷ 0.25²
Q₂ = 0.00000000983 C = (9.83 × 10⁻⁹) C = 9.83 nC
Hope this Helps!!!
Answer:
well im on the test too trying to help but all i know is it passes through and changes the color to red.
Explanation:im sorry im stoopid
