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Give an example of 3 different types of radiation stating their make up, penetration and ionising effect.

alpha - helium nucleus - least penetrating - most ionising beta - electron or positron - second most penetrating - second most ionising gamma - photon - most penetrating - least ionising
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Answered by Mark S. • Physics tutor
2387 Views

Solving a quadratic with ax^2 e.g. 2x^2 - 11x + 12 = 0

To solve the equation in the form (ax + b)(x + c): Method 1 Rewrite the x term as the sum of 2 different x terms. Start by multiplying the x^2 term and the final number term, to give 24. The two x terms shou...
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Answered by Andrea W. • Maths tutor
8161 Views

When do you use the German genitive to show possession?

The German genitive is used in a number of ways, but its number one use is to denote possession. This could be to do with anything, much like possession in English. You can be really creative with the German...
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Answered by Ben B. • German tutor
2377 Views

What makes phenol different from alcohols?

You will need an underlying knowledge of the structure of benzene to answer this question. Benzene (C6H6) is formed from 6 carbon atoms arranged in a ring. [draw benzene] Each carbon atom has 4 bonding elect...
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Answered by David M. • Chemistry tutor
2651 Views

How does the pancreas control blood sugar levels?

In humans, the pancreas can sometimes be described as an endocrine gland. This means it releases some of its substances staight into the bloodstream; this is the mechanism used to secrete the hormones contro...
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Answered by Madura N. • Biology tutor
7974 Views