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What are the three major radiations experienced by heavy unstable nuclei, and how does the penetrating power compare for each?

α - Emission of a Helium nucleus, it has the highest mass and lowest energy of the three types of radiation, it has a +2 overall charge due to its 2 neutron - 2 proton makeup, and can penetrate up to a few s...
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Answered by Ryan L. • Physics tutor
2511 Views

When solving two simultaneous equations, when should you use the method of elimination and when would you use the method of substitution?

I would first always label the two equations as equation 1 equation 2. I would then look to see if you can cancel one of the variables out by adding or subtracting the two equations together. If this is poss...
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Answered by Reece C. • Maths tutor
3925 Views

how to calculate reducing balance depreciation, provide an example.

In the reducing balance depreciation you have to deduct a same percentage from the carrying amount (historical cost of the asset - accumulated depreciation) of the asset each year. For example, cost of machi...
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Answered by Bushra B. • Accounting tutor
3423 Views

Use completing the square to find the minimum of y = x^2 - 4x + 8

Remember completing the square gives a result of the form (x+q) 2 + p where q and p are numbers Also q is always half of the x term, which in this case is -4, as such q = -2 Substituting this in, we get (x-2...
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Answered by Sol D. • Maths tutor
3763 Views

What is an atom?

Atoms are the smallest particle of matter that cannot be divided and have a nucleus which contains protons and neutrons with electrons surrounding it in energy levels.
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Answered by Shazna B. • Chemistry tutor
3439 Views