unkownperson030
05.05.2020 •
Biology
SO CONFUSED
Elizabeth and Benjamin are investigating the forces that result from electric charges. They rub inflated balloons with wool cloth. Which of the following observation supports the claim that the balloons have the same electric charge?
A)Not all the balloons were rubbed with wool.
B)The balloons were all about the same size.
C)The balloons repelled each other without touching.
D)The balloons are made of thin material.
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Ответ:
Option C.
The balloons repelled each other without touching.
Explanation:
The balloons repelled each other without touching is an observation that the balloons has electric charge.
Electric charge is of an object either positive or negatively charge.
The balloons are positively charged that is why they repel each other. The objects that are positively charged repel each other. That is positively charged ballin will exert a repulsive force against another positively charged balloon.
Ответ:
This is a advantage of flowering plants because flowers can kill insects.