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Properties of Air at atmospheric pressure
Paul Evans

Mar 29, 2015
1
Properties of water at atmospheric pressure
Paul Evans

Mar 29, 2015
1
Combine date and time cells in excel
Paul Evans

Mar 15, 2015
0
How to combine multiple cells in excel
Paul Evans

Mar 15, 2015
0
Seconds between two dates and times
Paul Evans

Mar 15, 2015
0
Hours between two dates and times
Paul Evans

Mar 15, 2015
0
What is Voltage?
Paul Evans

Mar 15, 2015
0
What is electricity?
Paul Evans

Mar 3, 2015
2
The difference between mass and weight
Paul Evans

Feb 20, 2015
2
Area of an annulus
Paul Evans

Feb 14, 2015
0
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Area of an octagon
Paul Evans

May 10, 2015
0
How to calculate the area of an octagon There area two main methods to calculate the area of an octagon. Method 1: If you know the length...
What is Energy?
Paul Evans

Oct 24, 2015
0
Energy is all around us and throughout the entire universe. It’s inside of all us and we consume and generate it every day, we...
Area of a segment
Paul Evans

Jul 16, 2015
0
The area of a segment can be calculated using the following formula If using degrees: A = (r2 ÷ 2) x ((Π ÷ 180 x Θ)  sin Θ) If...
Density explained!
Paul Evans

May 18, 2015
7
What is density? Each material has a different density, the difference depends on how the materials particles are packed together. If the particles of a material...
Refrigeration cycle, essential knowledge.
Paul Evans

Jun 7, 2015
2
A fluid, known as a refrigerant, moves between four key stages in refrigeration cycle. As it does so, it changes in pressure and temperature,...
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Density explained!
Paul Evans

May 18, 2015
7
The difference between mass and weight
Paul Evans

Feb 20, 2015
2
Mass flow rate explained (kg/s)
Paul Evans

May 2, 2015
1
What is Voltage?
Paul Evans

Mar 15, 2015
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What is electricity?
Paul Evans

Mar 3, 2015
2