Answer to Question #275712 in Physics for Asif

Question

b) A matter has a body-centered cubic unit cell with a length of 330 pm along an edge

and a density of 8.57 g cm^-3. Calculate the atomic mass of the matter.

c) Find the total energy of a moving object of mass 6.3 kg and momentum 11.5 x 10 kgms^-1

Answer 1

b)

$(3.3\cdot10^{-10})^2=\frac{2M}{8.57\cdot6.023\cdot10^{23}}\\M=93$

c)

$E=\frac{p^2}{2m}\\E=\frac{(11.5\cdot10^6)^2}{2(6.3)}=1.05\cdot10^{13}\ J$