Answer:
A shield should be about 6.91 mean free paths thick to attenuate a neutron beam by a factor of 1000.
Explanation:
The equation for the attenuation of a neutron beam is
where Io, x and λ are the initial intensity, distance traveled and the mean free path of the neutron respectively. I is the intensity after the distance x. Rearranging we get,
⇒
we know that = 1000
putting it above equation we get
x=λ ln(1000)
x= 6.91λ
Therefore, A shield should be about 6.91 mean free paths thick to attenuate a neutron beam by a factor of 1000.
Answer:
34 meters
Explanation:
20 meters +14 meters =34 meters
Answer:
the energy usage of the clock per year is 17.2 kWh
Explanation:
Given;
power drawn by the clock, P = 2 W
duration of the clock's operation, t = 8,600 hours per year
The energy usage of the clock per year is calculated as;
E = Pt
Therefore, the energy usage of the clock per year is 17.2 kWh
I'm pretty sure its Inertia, because its completely dependent on the "inertia" of an object. The more Inertia it has, the more mass it has. If you need more info you can look on physicsclassroom.com.