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The diaphragm contracts and flattens out, increasing the volume of the thorax and decreasing the pressure in there. This causes a pressure gradient between the thorax and the outside air, so air flows int...
Recall the product rule for differentiation. If y=uv, where u and v are functions defined by functions of x, then we can take the derivative of y as: y'=u'v+v'u () (where ' denotes the derivative) ...
The element carbon can exist as a few different "isotopes" - all this means is that the number of neutrons in the nucleus can vary to give atoms that behave the same way chemically so are still ...
Step 1:Replace any obvious in the integral with the substitution u=x+2 ∫_(-1)^1 3/√u dx
Step 2: Differentiate the substitution u=x+2 to find an expression for dx (to differentiate multiply by the p...
You should always begin your Critical Essay with an introduction. This should refer to the question in your own words and prepare the reader for the argument that you are going to make in the following pa...
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