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A light is shone through a diffraction grating of slit spacing 4.5x10^5 lines per metre. The incident wavelength is 650nm. Find the angle produced by the incident light and the 2nd order maximum.

In the question you are given the slit spacing of the diffraction grate. To find the fringe spacing of this grate you can use d=1/N where N is the slits per metre. In this question this would be 1/4.5x10^5 =...
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Answered by Sarah C. • Physics tutor
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Solve algebraically the simultaneous equations x^2 + y^2 = 25 y – 3x = 13

First begin with rearranging the second equation to put it in terms of Y. Then substitute by putting the second equation (y=3x+13) into equation one as Y^2. Expand (3x+13)^2 and add like terms to form 10x^2 ...
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Answered by Dani L. • Maths tutor
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Can you explain the circulatory system of the blood?

The heart is divided in half by a septum, giving a right side and a left side. Both sides will also be divided again and have an atrium on the top and a ventricle on the bottom. We will begin at the left ven...
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Answered by Annabel S. • Biology tutor
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Evaluate the view that mergers always result in a lessening of competition

Introduction Define mergers: combining of two firms in the same industry in either the same or different points of the production process, resulting in one larger firm. Key points:For:Economies of scale. Lar...
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Answered by Nadiath C. • Economics tutor
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‘Lenin was the ruler who did the most to transform Russia in the period 1855-1956’. How far and to what extent do you agree?

In response to the question one must consider what types of change lead to transformation; this can be political, economic, social, industrial or martial change. During the period 1855-1956 Europe changed dr...
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Answered by Olivia E. • History tutor
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