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In the Photoelectric effect, Why does increasing the light intensity have no effect on the energy of the electron emitted?

The equation to calculate the energy of an emitted electron is: E = hf - φ, where E is the energy of the electron emitted, h is the Planck's constant,

Answered by Pankaj K. • Physics tutor

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why is gravitational potential negative?

the gravitational potential is set to be 0 at a distance of infinity.

Answered by Navdeep S. • Physics tutor

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State one property that all EM waves have in common.

All EM waves travel at the same speed in a vacuum.

Answered by Elizabeth H. • Physics tutor

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Explain what is meant by the term "plastic deformation".

Plastic deformation happens to a material when that material is stretched beyond its elastic limit and hence won't return to its original shape. Therefore the material is permenantly mis-shaped.

Answered by Elizabeth H. • Physics tutor

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What is the Rutherford scattering experiment and what did it tell us about the nature of the atom?

The experiment involves firing alpha particles, positively charged helium nuclei made of two protons and two neutrons, at a thin layer of gold foil. There is a screen behind the gold foil which is used as...

Answered by Tutor61277 D. • Physics tutor

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