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When learning Spanish it’s very easy to get confused over when to use ‘por’ and ‘para’ in a sentence since both mean ‘for’ in English. There are a variety of contexts in which both words can be used, but one...

a is acceleration, v is velocity, s is position vertically: a = - g v = u - gt (by integrating with respect to t and setting initial speed u as constant of integration) s = ut -gt 2 /2 + s 0 (by integrating ...

EXPLANATION: Integration by parts states that ∫uv' dx = uv - ∫u'v dx , where u & v are funcions of x and the notation u' means du/dx. to do integration by parts given an integral ∫f(x) dx, it involves wr...

Primary succession starts from bare rock , so no soil is present at the start. Over time the pioneer organisms (such as moss and lichen) break the rock and as the organisms die and decompose, the soil builds...

The preparation occurs to the DNA whilst in the nucleus of the cell. As DNA is a double helix, the two strands of DNA need to be split apart. Therefore the hydrogen bonds need to be broken. The DNA helicase ...