Kamir and Alexis are studying the properties of water. They conducted a variety of experiments to determine its physical and che
2 answers:
Answer: D) Neutral water react s with carbon dioxide to form an acid solution.
Explanation: A physical property is defined as the property in which a change in shape, size takes place. No new substance gets formed while measuring physical properties.
Example: A) Salt dissolves in water.
B) Oil and water do not mix.
C) Pencil shavings float on water and do not dissolve.
A chemical property is defined as the property in which a change in chemical composition takes place. A new substance is formed while measuring chemical properties.
Example: D) Neutral water react s with carbon dioxide to form an acid solution.
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Answer:
Explanation:
The electric flux through a certain surface is given by (for a uniform field):
where:
E is the magnitude of the electric field
A is the area of the surface
is the angle between the direction of the field and of the normal to the surface
In this problem, we have:
is the electric field
L = 2.0 m is the side of the sheet, so the area is
, since the electric field is perpendicular to the surface
Therefore, the electric flux is