A teacher tells her students that the space around a charged particle will exert a force on any other charged particle that is placed within this space. She places an object between two charged metal plates, one plate that is positively charged and one plate that is negatively charged. Which argument BEST supports what will happen?

Question

options:

An object with a negative charge will remain stationary between the plates.
An object with a negative charge will remain stationary between the plates.

A neutrally-charged object will move toward the negative plate.
A neutrally-charged object will move toward the negative plate.

An object with a positive charge will move toward the negative plate.
An object with a positive charge will move toward the negative plate.

A neutrally-charged object will move toward the positive plate.

Answer 1

The argument that BEST supports what will happen when an object is placed between two charged metal plates is:

An object with a positive charge will move toward the negative plate.

This is because like charges repel and opposite charges attract. The positively charged plate will exert a force that attracts the positive charge towards itself while the negatively charged plate will exert an attractive force on the positive charge, directing it toward the negative plate. Therefore, a positively charged object will experience a net force pulling it toward the negatively charged plate.

Answer 2

A student claims that the planets orbit the Sun because of gravitational force. Which statement best supports this claim ?

options:

Planets are far away from the Sun which makes them have a stronger gravitational force.
Planets are far away from the Sun which makes them have a stronger gravitational force.

The planets have a stronger gravitational field compared to the Sun because they have less mass.
The planets have a stronger gravitational field compared to the Sun because they have less mass.

The Sun has a stronger gravitational field because it was the first part of the solar system to form.
The Sun has a stronger gravitational field because it was the first part of the solar system to form.

The Sun has a stronger gravitational field because it has a larger mass.

Answer 3

The statement that best supports the claim that the planets orbit the Sun because of gravitational force is:

The Sun has a stronger gravitational field because it has a larger mass.

This is the correct explanation because gravitational force is proportional to mass. The Sun, being significantly more massive than the planets, exerts a strong gravitational pull that keeps the planets in orbit around it. This statement directly ties the concept of gravitational force to the mass of the Sun, providing a clear rationale for why the planets orbit it.