A family goes through six cases of water every two weeks. How many cases of water will this family consume in a year?

144 cases of water is what this family will consumer in a year.

Explanation:

d.) circle motion requires a force to give it a centripetal acceleration.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.