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Sewage can contaminate water supplies which leads to waterborne diseases like typhoid or cholera. Agricultural run-off threatens water quality since pesticides have high levels of nitrate which causes eutrop...

Using Pythagoras, x 2 + y 2 = r 2 .Using basic trigonometry, x = rsinθ and y = rcosθ. xy + 1 = r 2 sinθcosθ + 1 = (1/2)r 2 sin2θ + 1 Subbing in both halves and doubling gives:2r 2 = r 2 sin2θ + 2 -> r 2 (...

An ionic compound is formed from positive and negative ions which have balanced and opposite charges.K has 1 electron in it's outer shell. S has 6 electrons in it's outer shell. S needs 2 more electrons to f...

1st Law - a body will move with constant velocity or remain at rest unless acted on by a resultant force 2nd Law - F = ma. The rate of change of momentum of an object is equal to the resultant force and it a...

An infinitive verb is the most simple form of the verb that has not been adjusted to explain who is doing the action, but simply any action itself. In English, the infinitive verb will always begin with &quo...