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Our first step in this physics problem should be to identify all of the forces that act on the objects. There are two forces here,electrical and gravitational. Since both objects have the same charge i...

This exercise is asking to prove the existance of the square root of 2. So let's consider the function f(x) = x^2. Since f(x) is a polynomial, then it is continuous on the interval (- infinity, + infin...

The subjunctive is a mood used to express statements which are uncertain, for example, expressing emotion, possibility, necessity or desire. 
To form the subjunctive for regular verbs (and some irreg...

A simple way to do this is to use substitution. You can pick values for x such as x=0,1,2 and find the values for y. When you have two or more coordinates you can plot the line.

In this c...

The most important thing about the essay-writing process is planning. The amount of time that you spend planning an essay determines how well that essay will flow and ultimately, the mark that you will...