3. observe: set q₁ to -5.0×10⁶ c. gradually decrease q₂ below 0.0×10⁶ c.\na. what do you observe?\nthe balls…

3. observe: set q₁ to -5.0×10⁶ c. gradually decrease q₂ below 0.0×10⁶ c.\na. what do you observe?\nthe balls may attract or repel\nb. what does this tell you about the force between the pith balls?\nattraction indicates opposite sign charges and an electro - static force repulsion indicates same sign charges and a repulsive electrostatic force\n4. observe: now slowly increase q₂ above 0.0×10⁶ c. what do you observe, and what does this tell you about the electrostatic force?

3. observe: set q₁ to -5.0×10⁶ c. gradually decrease q₂ below 0.0×10⁶ c.\na. what do you observe?\nthe balls may attract or repel\nb. what does this tell you about the force between the pith balls?\nattraction indicates opposite sign charges and an electro - static force repulsion indicates same sign charges and a repulsive electrostatic force\n4. observe: now slowly increase q₂ above 0.0×10⁶ c. what do you observe, and what does this tell you about the electrostatic force?

Answer

Brief Explanations:

When $q_1=- 5.0\times10^{6}\text{ C}$ and $q_2$ is increased above $0.0\times10^{6}\text{ C}$ (i.e., $q_2$ is positive), since $q_1$ is negative and $q_2$ is positive, the balls will attract each other. This indicates that there is an attractive electrostatic force between them as opposite - sign charges attract according to Coulomb's law of electrostatics.

Answer:

A. The balls attract each other. B. Attraction indicates opposite - sign charges and an attractive electrostatic force.