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Two identical objects have a charge of magnitude q. If r is the distance bethween them, what should their mass be so that the objects are balanced.

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 in magn...
DK
Answered by Dilyana K. • Physics tutor
4018 Views

Use the Intermidiate Value Theorem to prove that there is a positive number c such that c^2 = 2.

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, + infinity). ...
DK
Answered by Dilyana K. • Maths tutor
9746 Views

How do I plot a line on a graph, given the equation y=2x+1 ?

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 case you could find c...
HP
Answered by Hannah P. • Maths tutor
6530 Views

How do I start writing an essay?

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 get. ...
DL
5131 Views

How should I structure my answers when analysing text?

I am a strong advocate of 'PETER' (point, evidence, technique, explain, reader response) paragraphs. They allow you to effectively tick all the boxes an AQA, Edexcel, OCR or any other examiner will be lookin...
JA
Answered by Jonathan A. • English tutor
4015 Views