Two Very Small Plastic Balls of Equal Mass Are Released

question 67

Multiple Choice

Two very small plastic balls of equal mass are released from rest.One of them carries +10 µC of excess charge and the other one carries +1µC of charge.No other charges or fields are present.Which of the following statements are true about them as they move away from each other? (There may be more than one correct choice. )

• A)The acceleration of the 10-µC ball is 10 times that of the 1-µC ball.
• B)The acceleration of the 1-µC ball is 10 times that of the 10-µC ball.
• C)The balls always have accelerations of equal magnitude.
• D)The speed of the balls keeps increasing.
• E)The acceleration of the balls keeps increasing.

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Definitions:

Solute Concentration

The amount of solute per unit volume of solution, indicating how much of a substance is dissolved in another substance.

Water

A colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

Semipermeable Membrane

A membrane that allows certain molecules or ions to pass through it by diffusion and often by more specialized processes of facilitated diffusion, osmosis, or active transport.

Distilled Water

Water that has been boiled into vapor and condensed back into liquid in a separate container, removing impurities and contaminants.