Positively charged Object A is brought close to neutral Object B but does not touch it. The two objects begin to attract each other. What is this process called?
(Points : 1)
grounding
charge polarization
conduction
repulsion
4. How many coulombs could be in a lightning bolt?
(Points : 1)
1. 6 × 1019 C
5.0 × 106 C
5.0 × 100 C
6.24 × 1018 C
Question 5.5. If you charge a comb by rubbing it against fur and place it near scrap bits of paper, what will happen?
(Points : 1)
The comb will repel the bits of paper by induction.
The comb will attract the bits of paper by charge polarization.
The comb will repel the bits of paper by charge polarization.
The comb will attract the bits of paper by conduction.
Question 6.6. An object with a charge of +6.0 μC is 0.30 m from a second object and experiences an attractive force of 1.80 N. What is the magnitude of the charge on the second object?
(Points : 1)
6.0 μC
3.0 μC
+3.0 μC
+6.0 μC
Question 7.7. Two objects, each with a charge of +5.0 × 105 C, are separated by 0.50 m. What is the magnitude and type of force between them?
(Points : 1)
90 N, attractive
45 N, repulsive
+45 N, attractive
+90 N, repulsive
1: charged polarization
2: lightning bolts contain about 5c i'm assuming that for each answer you meant (using first one) 1.6x10^19 (small 19) in which case, C (5x10^0)
3: attract by polarization
4:f=q1*q2/4piε0*d^2=-3.0 (attractive, so opposite)
5:do as above
Thanks Jerome!!!!
Thank you, Jerome! :)
Object B is positive charged
Charged polarization
0.30m
5.0x10^0C
The comb will attract the bits of paper by charge polarization
-3.0
1. The process described in the question, where positively charged Object A attracts neutral Object B without touching it, is called charge polarization. Charge polarization occurs when the electric field of an object causes the charges in another object to redistribute, resulting in an attractive force between the two objects.
5. If you charge a comb by rubbing it against fur and place it near scrap bits of paper, the comb will attract the bits of paper by charge polarization. Rubbing the comb against fur transfers electrons from the fur to the comb, causing the comb to become negatively charged. When the negatively charged comb is brought close to the neutral bits of paper, the electric field of the comb polarizes the charges in the paper, causing a redistribution of charges and an attractive force between the comb and the bits of paper.
6. To answer this question, we can use Coulomb's law, which states that the magnitude of the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. In this case, the attractive force experienced by the first object is given as 1.80 N, and the distance between the two objects is 0.30 m. By rearranging the Coulomb's law equation, we can solve for the magnitude of the charge on the second object:
F = k * (|q1 * q2| / r^2)
1.80 N = (8.99 * 10^9 N m^2/C^2) * (|6.0 * 10^-6 C * q2| / (0.30 m)^2)
Solving for q2, we find that the magnitude of the charge on the second object is 3.0 μC.
7. Similar to the previous question, we can use Coulomb's law to solve this problem. The magnitude of the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. In this case, both objects have a charge of +5.0 × 10^5 C, and they are separated by a distance of 0.50 m. By plugging in these values into the Coulomb's law equation, we can determine the magnitude and type of force between the two objects:
F = k * (|q1 * q2| / r^2)
= (8.99 * 10^9 N m^2/C^2) * (|5.0 × 10^5 C * 5.0 × 10^5 C| / (0.50 m)^2)
After calculating, we find that the magnitude of the force between the two objects is 90 N, and since both objects have the same charge, the force is repulsive.