If a mineral can be mined, what is it called?
a. a metal
b. a precious jewel
c. an ore
d. a gemstone

Option (C)

Explanation:

An ore is defined as a mineral deposit that is comprised of a sufficient amount of minerals, from which the economically rich metal, as well as other minerals, can be profitably extracted. These minerals are obtained from the environment by the various process of mining, such as the open cast and underground mining. For example, Zinc ore.

These ore deposits are commonly named after the location where they are found, and also named after the discoverer.

Thus, the correct answer is option (C).

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j