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Derive the formula for the maximum kinetic energy of an electron emitted from a metal with work function energy p , that is illuminated by light of frequency f.

The phenomenon this question relates to is the photoelectric effect, and it can only be explained using Einstein’s photon model of light. Electromagnetic waves are emitted in discrete lumps of energy, called...
GR
Answered by George R. • Physics tutor
23350 Views

How does stimulated emission work?

Stimulated emission occurs under the specific circumstances of a population inversion, that is, when there are more electrons in a higher energy level than one below it. There will be a certain energy differ...
KE
Answered by Konrad E. • Physics tutor
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How can the first order kinematic (SUVAT) equations be derived?

We start with the following two observations about an object undergoing constant acceleration. First, its acceleration is equal to the change in its velocity over time, hence, a=(v-u)/t. Rearranging gives th...
PT
Answered by Peter T. • Physics tutor
14565 Views

What is a potential divider?

A potential divider is essentially a series circuit. The characteristics of a series circuit is such that voltage from the source (a battery for example) gets split across the resistors according to the valu...
MK
Answered by Mehrin K. • Physics tutor
6297 Views

How do control rods work in a nuclear fission reactor?

In Nuclear Fission, neutrons collide with radioactive atoms (eg Uranium-235) in order to split the atom into two smaller atoms and releasing energy. The more neutrons there are the faster the reaction so to ...
JH
Answered by Jordan H. • Physics tutor
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