Areactor operating at 1 mw is scrammed by instantaneous insertion of $5.00 of negative reactivity. approximately how long does it take the power to drop to 1 milliwatt?

time is 3333.33 min or 55.55 hr

Explanation:

given data

reactor operating = 1 MW

negative reactivity =  $5

power = 1 miliwatt

to find out

how long does it take

solution

we know here power coefficient that is

power coefficient =

power coefficient = 1

so time required to reach power is

power =  reactivity × time / power coefficient + reactor operating

1 × = -5 t / 1  +  1 ×

5t =   -

t = 199999.99 sec

so time is 3333.33 min or 55.55 hr

it becomes positively charged by charging it

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s