Speed is calculated using the formula distance divided by time. For a distance of 26.2 miles, and a time of 3 hours and 40 minutes, we first convert the time to make it solely in terms of hours. 40 minutes is 2/3 of an hour, so this is a total time of 3 2/3 or 11/3 hours. If we divide 26.2 miles by 11/3 hours, we get a resulting speed of 7.14 miles/hour.
Answer:
c. graphene.
Explanation:
Graphene -
It is one of the allotropic form of the carbon atom , which consists of one single layer of atoms , that are linked in a two dimensional fashion , is referred to as graphene .
It is a form of very large aromatic molecule .
Graphene is structural element of the allotropes likes , fullerene , charcoal , graphite and carbon nanotubes .
Hence , from the given information of the question ,
The correct option is c. graphene .
Answer:it takes about a day
Explanation:
The mass number of an atom is obtained by totalling up the number of protons and neutrons there are for that atom.