How do you calculate the speed of a 3.1eV photon and a 3.1eV electron?

Explanation:

We need to find the speed of a 3.1eV proton and a 3.1eV electron.

For proton, using conservation of energy such that,

is mass of proton

For electron,

is mass of proton

Hence, this is the required solution.

answer: 0

explanation: im   14

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.