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In terms of the photoelectric effect, what is the work function of a material?

It is the work done (or energy) required to remove an electron from its surface. This information is used a lot in Einstein's Nobel prize winning Photoelectric effect experiment and theory.

Answered by Physics tutor
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What is a common harmonic device used in Classical Orchestral music?

Clear harmonic structure is used. The melody strays little from its main purpose and most key changes are heavily related.

Answered by Music tutor
3775 Views

Ignoring air resistance and assuming gravity to equal 9.81. If a ball of mass 1kg is dropped from a height of 100m, calculate it's final velocity before it hits the ground.

G = 9.81u = 0s = 100v2 = u2 + 2asv2 = 2 * 100 * 9.81v = root( 2 * 100 * 9.81) = 44.29ms-1
This question can be made into a 3 part question suitable for adv...

Answered by Maths tutor
2867 Views

What are the two types of waves and what are some of their uses/sources?

Transverse:Radio signalsElectromagnetic radiationTVPhone serviceOcean wavesLongitudinal:Seismic wavesSound wavesect.

Answered by Physics tutor
1540 Views

What is the general formula for Hydrocarbons?

Hydrocarbons have Hydrogen-Carbon bonds and carbon-carbon bonds. The formula is HnC2n+2This is made clear when diagrams are drawn from different hydrocarbons and you can deduce this ...

Answered by Chemistry tutor
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