# Exam 8 Target 3 Retake Preap

5 Questions | Total Attempts: 68  Settings  .

• 1.
Gravitational force and electrical force are alike in what ways?
• A.

A. They depend on charge.

• B.

B. They are field forces.

• C.

C. They act only when objects are touching.

• D.

D. They depend on mass.

• 2.
Which of the choices below best represent a difference between electric force and gravitational force?
• A.

A. Electric force is inversely proportional to the square of the distance between objects.

• B.

B. Gravitational force is stronger than electric force.

• C.

C. Electric force can both attract and repel.

• D.

D. Gravitational force exists between objects that are not touching.

• 3.
Which of the following is not true for both gravitational and electric forces?
• A.

A. Forces are either attractive or repulsive.

• B.

B. The inverse square distance law applies.

• C.

C. Forces are proportional to physical properties.

• D.

D. Potential energy is a function of distance of separation.

• 4.
Two 3 kg spheres each carry a charge of magnitude 3 C. How does FE, the strength of the electric force between the spheres, compare with FG, the strength of their gravitational attraction?
• A.

A. FE > FG

• B.

B. FE < FG

• C.

C. FE = FG

• D.

D. If the charges on the spheres are of the same sign, then FE > FG ; but if the charges on the spheres are of opposite sign, then FE < FG.

• E.

E. Cannot be determined without knowing the distance between the spheres

• 5.
When comparing the force of attraction between an electron and a proton due to the electric force and gravity, it can be concluded that
• A.

A. the gravitational force is a lot stronger

• B.

B. the electric force is a lot stronger

• C.

C. the two types of forces are the same

• D.

D. they cannot be compared

• E.

E. the electric force is slightly stronger Back to top