Quiz: Springs, Gravity, and Electromagnetism

What is the primary function of a spring when it is stretched?

• It pushes against the attached object
• It pulls back on the attached object
• It remains at its natural length
• It exerts no force on the object

In Hooke's Law (Fs = kx), what does 'k' represent?

• The spring's length
• The spring's mass
• The spring constant
• The spring's potential energy

How does the potential energy of a spring change as it is stretched further?

• It decreases linearly
• It increases linearly
• It increases quadratically
• It remains constant

If the distance between two masses is doubled, how does the gravitational force between them change?

• It doubles
• It halves
• It becomes one-quarter
• It remains the same

What happens to your weight if the Earth's mass were to double?

• It would halve
• It would double
• It would quadruple
• It would remain the same

Which of the following best describes the relationship between charge and electric force?

• Charge is to electric force as velocity is to momentum
• Charge is to electric force as mass is to gravitational force
• Charge is to electric force as energy is to power
• Charge is to electric force as pressure is to volume

What happens when two like charges interact?

• They attract each other
• They repel each other
• They neutralize each other
• They have no effect on each other

In Coulomb's Law (Fe = k(q₁q₂)/r²), what does 'k' represent?

• The gravitational constant
• The electric field strength
• The electrostatic constant
• The charge of an electron

How much charge passes through a typical 100 watt light bulb each second?

• 0.1 C
• 1 C
• 10 C
• 100 C

What is the electric field defined as?

• The force on a test charge divided by the test charge amount
• The product of voltage and current
• The ratio of mass to charge
• The potential difference between two points