The option which is not part of the kinetic molecular theory is that B. there is very little empty space in a gas.
As a matter of fact, gas particles are very tiny and they exist in mostly empty spaces.
I think 42… sorry if its wrong :( hope it helps..
Answer:
Explanation:
a(t)=20t i+sin(t) j +cos(2t) k
v(t)=
=
---------------eqn 1
given v(0)=i
i=
from equation 1
V(t)=----------eqn 2
now r(t)=
given r(0)=j
0i+1j+ok = 
Line up in a direction parallel to the magnetic field lines<span />
