Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
A household consumes
300
kWh
300\,\text{kWh}
300
kWh
of electrical energy in a month. If this entire energy were obtained by complete conversion of mass into energy, calculate the corresponding loss of mass in grams. (Assume
c
=
3.0
×
10
8
m s
−
1
c = 3.0\times10^{8}\,\text{m s}^{-1}
c
=
3.0
×
1
0
8
m s
−
1
.)
Browse the problem library