Why would you expect alpha particles to be less able to penetrate materials than beta particles of the same kinetic energy?
A)Alpha particles pick up electrons to become harmless helium atoms.
B)Alpha particles carry twice the electric charge.
C)Alpha particles move much slower for a given kinetic energy.
D)Two of the above answers are reasonable.

Question

Quizplus · Accepted Answer

Alpha particles carry twice the electric charge and move much slower for a given kinetic energy, making them interact more readily with materials and thus less able to penetrate than beta particles.

Why Would You Expect Alpha Particles to Be Less Able