If an alpha particle and a beta particle have the same energy, which particle will penetrate farther into an object?

Beta particle

Explanation:

If an alpha particle and a beta particle have the same energy, beta particle will penetrate farther into an object than alpha particle because;

1. In air, beta particles can travel a few hundred times farther than alpha particles.

2. Beta particles have more penetrating power than alpha particles.

3. Alpha particle can be absorbed or stopped by an inch or less 1-2 centimeters of air or a thin piece of tissue while beta particles can be stopped or absorbed by a thin layer of Aluminium.

4. Alpha particles loose all of their energies in a small volume easily that beta particles.

5. Beta particles can traveled a longer distance between 2-3 meters at a speed nearly equal to that of light than alpha particles which travel a distance between 2-4 cm at a speed approximately five percent the speed of light.

179.3 cells

Explanation:

The lamp requires a current of 60W/220V = 0.273A

The dry cells each have an internal resistance of 1Ω.

The number of cells required in series equals 220V divided by the cell's voltage minus their internal voltage drop under a load current of 0.273A.

= 220V/(1.5V–1Ω*0.273A)

=179.3 cells