For a point source at the origin, the three-dimensional neutron diffusion equation be 15.4.4 comes -dv2(r)k2d¢(r) = q8(r) apply a three-dimensional fourier transform. solve the transformed equation. trans form the solution back into r-space hint the following equations are useful 1. vf(r)eikrdr -kl2f(r)ekr d? r (2)e 1 (2t)e p(r)eikr d2r (2n)e 1 2. let d(k) -ar 1 4t 3. the fourier transform of f(r) 1s (2m)2+a2

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

grav potential energy

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s