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Solve 3x - 5 < 16

The first thing you should always do when approaching questions like this is to get the numbers on one side and the letters on the other. This makes the equation simpler and helps you to solve it. By adding ...
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Answered by Dannielle S. • Maths tutor
17137 Views

How do you find the angle between two lines in three dimensional vector space given two points on line 1 and the vector equation of line 2

Find the direction vector of line 1 Find the scalar product of the direction vectors of lines 1 and 2 Calculate the magnitude of both direction vectors Use (equation on whiteboard) to find the cosine of the ...
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Answered by Mark M. • Maths tutor
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Why would a cell lyse when it's in water?

Lysis, or the bursting of a cell, happens because of a cell swelling excessively causing it to burst, due to the movement of water into the cell by osmosis. However, this isn't the case for all cells! Osmosi...
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Answered by Ashar A. • Biology tutor
20492 Views

What are the components of an atom and what are their properties?

An atoms is composed of a central NUCLEUS , with ELECTRONS occupying shells, moving around the nucleus. The nucleus is composed of PROTONS and NEUTRONS . The PROTON has a relative mass of 1 and a charge of +...
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Answered by Axel R. • Chemistry tutor
7853 Views

What is an electron volt?

Electron volts, like joules, are a unit of energy. This may sound confusing- why two? But think of it this way; length has two possible units- metric (metres) and imperial (inches). We can use either units t...
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Answered by Nicholas M. • Physics tutor
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