A student observes interactions between two sets of electrically charged objects. In each set, the objects carry either a charge of –1 or +1 Coulomb. Which question can the student ask to identify the set with the stronger interaction?(1 point)

Question

Responses

What is the mass of each object in the interactions?

Are the objects both positively charged or both negatively charged?
Are the objects both positively charged or both negatively charged?

How far apart are the objects in each interaction?
How far apart are the objects in each interaction?

How large are the objects in each set?
How large are the objects in each set?

Answer 1

To identify the set with the stronger interaction between two sets of electrically charged objects, the student should ask:

Are the objects both positively charged or both negatively charged?

This question directly addresses the nature of the interaction between the charges. According to Coulomb's law, like charges repel each other, and opposite charges attract. If both objects in a set are of the same charge (either both +1 or both -1), they will repel each other, while if they are of opposite charges, they will attract. Thus, knowing whether the charges are the same or different will help to determine the strength and type of the interaction.

The other questions regarding mass, distance, or size are not directly relevant to determining the strength of the electrostatic interaction, as strength is more fundamentally related to the nature of the charges involved.

Answer 2

Object A has a charge of –1 Coulomb. At a given distance, the object with which charge would be most strongly attracted by object A?(1 point)
Responses

–2 C
–2 C

+2 C
+2 C

+1 C
+1 C

–1 C

Answer 3

Object A has a charge of –1 Coulomb. According to the principles of electrostatics, oppositely charged objects attract each other, while objects with the same charge repel each other.

Among the given options, the object that would be most strongly attracted by object A (–1 C) is:

+2 C

The attraction between opposite charges increases with the magnitude of the charges. Since +2 C is not only opposite in charge but also has a larger magnitude compared to the other options, it would create a stronger attractive force with object A compared to +1 C or –1 C.

The charge -2 C would also repel object A, and -1 C would repel as well. Therefore, the correct answer is +2 C.

Answer 4

Use the table of observations about the electric force between charged objects to answer the question.

Charge of Object 1 (C) Charge of Object 2 (C) Distance (mm) Amount of Electric Force
+1 +1 4 medium
–1 –1 2 strong
–2 +2 4 strong
An object with a charge of +1 C is 10 mm from an object with a charge of +1 C. Based on the data in the table, which type and amount of electrical force will there most likely be between the two objects?

(1 point)
Responses

repulsive, strong
repulsive, strong

attractive, strong
attractive, strong

repulsive, weak
repulsive, weak

attractive, weak
attractive, weak
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Answer 5

To determine the type and amount of electric force between two objects with a charge of +1 C each at a distance of 10 mm, we can analyze the information provided in the table:

1. In the given table, when the charges are both +1 C (at a distance of 4 mm), the force is noted as "medium."
2. When both charges are -1 C (at a distance of 2 mm), the force is "strong."
3. When one charge is -2 C and the other +2 C (at a distance of 4 mm), the force is "strong."

From this, we can conclude:

• Objects with the same charge (like +1 and +1) will repel each other.
• As the distance increases (from 4 mm in the table to 10 mm), the electric force weakens since electric force decreases with the square of the distance.

Since the objects in the question are both positively charged, they will repel each other. Given that they were only medium in attraction at a distance of 4 mm, we can infer that at a distance of 10 mm, the force will be weaker.

Therefore, the most likely type and amount of electric force between the two objects would be:

repulsive, weak.

Answer 6

How does the magnitude of the electrical charge on objects affect the electric force between them?(1 point)
Responses

As the charge increases, the force decreases in strength.
As the charge increases, the force decreases in strength.

As the charge increases, the force becomes more attractive.
As the charge increases, the force becomes more attractive.

As the charge increases, the force becomes more negative.
As the charge increases, the force becomes more negative.

As the charge increases, the force increases in strength.

Answer 7

The correct response regarding how the magnitude of the electrical charge on objects affects the electric force between them is:

As the charge increases, the force increases in strength.

According to Coulomb's Law, the electric force (F) between two charges is directly proportional to the product of the magnitudes of the charges (q1 and q2) and inversely proportional to the square of the distance (r) between them:

\[ F = k \frac{|q_1 \cdot q_2|}{r^2} \]

Where \(k\) is Coulomb's constant.

This means that as either charge (or both) increases, the electric force between the two charges increases in strength.