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Why does a single slit diffraction pattern occur?

When light passes through a narrow gap it will diffract (spread out). This means the light reaching the screen could have come from anywhere within the slit. If one wavefront passes through the left of the s...
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Answered by Jordan H. • Physics tutor
15802 Views

What is an easy way to remember the effects of the exchange rate on imports and exports?

These two simple acronyms will help you remember the effects of changes in the exchange rate on imports and exports: Strong Pound Imports Cheap Exports Dear The acronym "SPICED" is a helpful way to...
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Answered by Jake C. • Economics tutor
93094 Views

What are the key differences between plant and animal cells?

There are several important differences between plant and animal cells that will be key to remember in the exam. Namely: - Plant cells have a rigid cell wall whereas animal cells have a cell membrane - Plant...
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Answered by Jake C. • Biology tutor
8054 Views

Surd Calculations?

Surds are numbers left in 'square root form' (or 'cube root form' etc). They are therefore irrational numbers. Surds are the root of numbers and not whole numbers. Multiplication Example: √2 × √6 = √12 (= 2×...
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Answered by Nita B. • Maths tutor
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Can you solve the following 2 simultaneous equations; y=6x-2 and x^2-4x+19=y?

y=6x-2 x 2 -4x+19 Both equations are equal to Y, hence can be substituted into each other; 6x-2= x^2-4x+19 Now we only have X terms in our equations Bring all the like X terms together, and make equation equ...
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Answered by Mohammed C. • Maths tutor
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