Answer:
they are neither. if they were parallel they would be the same. if they were perpendicular they would be opposite reciprocal. So it is neither
<span>each row has 102 seats
there are 7 rows in the auditorium. To find the number of seats in the auditorium
multiply number of rows with seats per row
7x102= 714
total 714 seats</span>
Cobalt has an atomic number (Z) of 27, which means the nuclei of all its isotopes have 27 protons. Cobalt 60 has an atomic mass of 60, so it has 60-27 = 33 neutrons.
The mass of 27 isolated protons plus the mass of 33 isolated neutrons would be:
27*(1.007825 u) + 33*(1.008665 u) = 60.497220 u
The actual mass of the nucleus of 60-Co is 59.933820 u.
Mass defect: 60.497220 u - 59.933820 u = 0.563400 u
The mass defect is equal to the binding energy of a nucleus.
using the fact that 1 u = 931.5 MeV/c^2
(0.563400 u)*(931.5 MeV/u) = 524.807 MeV
you simply have to add all of the numbers together, so it'll be 2+5+12+7+1 or 27, therefore the answer is B
