# Question: In nuclear reactors subatomic particles called neutrons are slowed down

In nuclear reactors, subatomic particles called neutrons are slowed down by allowing them to collide with the atoms of a moderator material, such as carbon atoms, which are 12 times as massive as neutrons.

(a) In a head-on elastic collision with a carbon atom, what percentage of a neutron’s energy is lost?

(b) If the neutron has an initial speed of 1.5 x 107 m/s, what will be its speed after collision?

(a) In a head-on elastic collision with a carbon atom, what percentage of a neutron’s energy is lost?

(b) If the neutron has an initial speed of 1.5 x 107 m/s, what will be its speed after collision?

**View Solution:**## Answer to relevant Questions

In a noninjury chain-reaction accident on a foggy freeway, car 1 (mass of 2000 kg) moving at 15.0 m/s to the right elastically collides with car 2, initially at rest. The mass of car 2 is 1500 kg. In turn, car 2 then goes on ...Find the center of mass of a system composed of three spherical objects with masses of 3.0 kg, 2.0 kg, and 4.0 kg and centers located at (– 6.0 m 0), (1.0 m, 0), and (3.0 m, 0), respectively. Two skaters with masses of 65 kg and 45 kg, respectively, stand 8.0 m apart, each holding one end of a piece of rope. (a) If they pull themselves along the rope until they meet, how far does each skater travel? (Neglect ...On the rotating Earth, at what location(s) would a person have (a) the greatest and (b) the least centripetal acceleration? How does the centripetal acceleration for a person at 40° N latitude compare to that of a person at ...The Cartesian coordinates of a point on a circle are (1.5 m, 2.0 m). What are the polar coordinates (r, θ) of this point?Post your question