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Firstly the gold foil was flattened so that it was one atom thick. The researchers knew that alpha particles were positively charged, and so would be repelled by other positive charges. At the atomic scal...

Firstly, you need to differentiate the curve y. Using the equation dy/dx of sinkx= kcoskx, you need to differentiate 5sin3x first. So, as k=3 in this example, the answer is 5(3cos3x) which is equal to 15c...

Firstly, a free-body diagram of the problem should be drawn indicating the forces acting on the block (remember that the friction force is the product of the normal reaction on the block and the coefficie...

So Bacteria and other pathogens are too large to enter a cell via diffusion across the cells membrane so instead white blood cells will engulf them. This is essentially what phagocytosis is and cells that...

Metaethical theories are commonly grouped into five families. Non-cognitivism is the family of views which typically hold that moral statements are expressions of attitudes, as opposed to descriptions of ...