Answer:
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Explanation:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.
Answer:
The voltage ( or potential difference) V increases while the charge Q decreases.
Explanation:
The capacitance C of a capacitor is defined as the measure to which the capacitor can store charges. For a parallel-plate capacitor it is given by the following relationship;
where A is the surface area of the plates, d is their distance of separation, is the permittivity of free space and is relative permittivity.
Also, the capacitance of a capacitor can be expressed in the form of equation (2)
where Q is the charge stored and V is the potential difference.
By combining (1) and (2) and making d the subject of formula, we obtain the following;
By observing (3), it is seen that the distance d of separation between the plates is directly proportional to the potential difference V and inversely proportional to the charge stored Q. This implies that an increase in the distance d of separation will bring about an increase the the voltage or potential difference V and a decrease in the charge Q.