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Firstly, you should consider what forces are acting on the object and in what direction. It helps to draw a large diagram to label. In most questions, the forces should be told to you. It helps to keep in...

This is something that as you use them more, they will come more naturally, but there are a few ways to remember them. In general, the preterite is use for a past action that has been completed and is fin...

Blood leaves the right side of the heart via the pulmonary artery, which takes deoxygenated blood to the lungs so gas exchange may occur. Numerous alveoli are found here and these alveoli possess many inv...

2 x -4 = -8 -8 x 1 = -8 (2x^2-8x)+(x-4) 2x(x-4) + 1(x-4) (2x+1)(x-4)

sinx = o/h sinx x h =o sin30 x 8 = 4cm The opposite is 4cm