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What does a negative velocity mean?

To understand this question, it is important to know that velocity has both a direction and a magnitude. The magnitude can be expressed by the unit m/s, however the direction is expressed by a vector. To dis...
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Answered by Thomas D. • Physics tutor
34925 Views

Why does a salt not conduct electricity in its solid state?

In order to conduct electricity, charged particles must be available and these charged particles must have the possibily to move around freely. Salts consist of ions: charged particles. In the solid state ho...
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Answered by Thomas D. • Chemistry tutor
35818 Views

Can you make 'p' the subject of the following equation? 4(p-2q)= 3p+2

When a question asks you to make something the subject of an equation, it is asking you to rearrange it to get it in the form of, for example when 'p' is the subject, 'p = ....' First we want to expand the b...
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Answered by Sarah M. • Maths tutor
20555 Views

Find the coordinates of the minimum point of the curve y = 3x^(2) + 9x + 10

(Note: in this answer I will use the notation y' to represent the differential of y, and by the same reasoning y'' denotes the differential of y', or the second derivative of y.) A curve's maximum or minimum...
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Answered by James F. • Maths tutor
27960 Views

How should I start my introduction?

The introduction is where you would be talking about why you're interested in the subject you have chosen to study. This could be a topic area you particularly enjoyed, or another experience that led to you ...
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