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An isotope of 238,92-Uranium decays into a stable isotope of 206,82-Lead through a series of alpha and beta decays, how many of each does it go through?

This is a good example of where simplification can make an otherwise tricky question a lot easier. It is easy to get confused trying to work out different isotopes and the extra products of the decays, but a...
NM
Answered by Nathan M. • Physics tutor
6044 Views

Which are the forms of heat you know. Explain them briefly including an example

The most common ways to transfer heat are conduction and convection. Conduction is heat transfer through mollecular collision. The slower speed particles, or colder particles will increase their kinetic ener...
JA
Answered by Joao A. • Physics tutor
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Which are the types of carrier movements and how are they activated

Drift - As a result of an electric field Diffusion - As a result of a carrier gradient, by other words a difference in the carrier level from one side to the other, usually when we have a p-n junction
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Answered by Joao A. • Physics tutor
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what is the total resistance of 2 resistors each with resistance 2 ohms in parallel?

1/R t = 1/R 1 + 1/R 2 The equation for resistors in parrallel. If R 1 and R 2 are both 2 ohms then 1/R t = 1/2 +1/2 = 1 so R t = 1 ohm. Note: Don't forget the units at the end.
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Answered by Hermione W. • Physics tutor
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How, given the threshold frequency and the kinectic enery of a photon, do you determine the frequency of the phton?

You can use E= hf o + KE and E=hf (Einstien's equations) to work how the frequency of a photon, where f o is the threshold frequency and h is Planck's constant.
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Answered by Hermione W. • Physics tutor
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