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Ignoring air resistance and assuming gravity to equal 9.81. If a ball of mass 1kg is dropped from a height of 100m, calculate it's final velocity before it hits the ground.

G = 9.81u = 0s = 100v 2 = u 2 + 2asv 2 = 2 * 100 * 9.81v = root( 2 * 100 * 9.81) = 44.29ms -1 This question can be made into a 3 part question suitable for advanced A level students B) Determine or show grap...
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Integrate with respect to x [x^2]

Integrate(x 2 )When we integrate we use the formula x n+1 /n+1So therefore as in this case n=2So taking this all into account, the integral of x 2 = x 3 /3
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What is the importance of the 'refractory period' after an action potential has been generated?

The refractory period is a period of recovery after an action potential where the ion channels will not open and the membrane can't be excited or depolarised. This happens to encourage the diffusion of sodiu...
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Two proteins have the same number and type of amino acids but different tertiary structures. Explain why.

The order of the amino acids (primary structure) in the two proteins may be different. This can result in ionic, hydrogen and disulphide bonds to form in different locations in each protein. Such differences...
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Find the turning points on the curve with the equation y=x^4-12x^2

y = x^4 - 12x^2 dy/dx = 4x^3 - 24x The turning points are where dy/dx = 0 4x^3 - 24x =0 x(4x^2 - 24) = 0 Therefore one of the turning points is at x = 0 4x^2 - 24 = 0 4x^2 = 24 x^2 = 6 x = +/- √6 Substitute ...
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