To initiate a nuclear reaction, an experimental nuclear physicist wants to shoot a proton into a 5.50-fm-diameter 12C nucleus. The proton must impact the nucleus with a kinetic energy of 2.30 MeV. Assume the nucleus remains at rest. With what speed must the proton be fired toward the target?

Explanation:

From the question we are told that

Nucleus diameter

a 12C nucleus

Required kinetic energy

Generally initial speed of proton must be determined,applying the law of conservation of energy we have

where

=initial kinetic energy

=final kinetic energy

=initial electric potential

=final electric potential

mathematically

where

=distance b/w charges

=nucleus charge

=constant

=proton charge

Generally kinetic energy is know as

Therefore

Generally equation for radius is

Mathematically solving for radius of nucleus

Generally we can easily solving mathematically substitute into v_1

Therefore the proton must be fired out with a speed of

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

the most reliable source of information.is wikipedia