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A one-tailed hypothesis predicts the direction of the results, whereas a two-tailed hypothesis does not. A two-tailed hypothesis simply states there will be an effect of the Inde...

Always a good first step to a problem like this, is to draw a diagram, making sure to label any lengths. The unknown in this question, is the rate at which the surface of water, in the cone, is rising. Ho...

It's all about making the connections between what you're hearing and what you understand is going on. Your A-Level Anthology should be heavily annotated with all important explanations in there. The best...

Eating a diet high in saturated fat has been linked to high levels of cholesterol in the blood.If there is too much cholesterol in the blood it can start to build up in the coronary arteries. This causes ...

The first step in tackling any second order differential equation is to find the Auxiliary Function. Looking at the equation's left hand side, we can find the derivative terms - we will s...