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x=300 because when you draw a y=cos x graph the cos 60 is on the decreasing part of the curve just before 90 degrees crossing zero. Then at 270 its increasing again and its 30 degrees more.

• A receptor detects a change in stimuli e.g. eye detects light - An effector carries out a response e.g. muscle

You would add barium chloride solution to the sample to be tested. Group II sulfate solubility decreases down the group - with barium sulfate being insoluble. We would expect to see a heavy white precipit...

This is a very common and vital question asked by students. The answer to this is being prepared. You can do this through a variety of steps. From personal experience I can tell you what works and what do...

In traditional Western thought, the language used to describe music appears to treat it as an "object" that results from the work of composers. Scholars and music-enthusiasts discuss these music...