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What is the difference between hydrophillic and hydrophobic molecules?

Charged or polar molecules such as salts, sugars and amino acids dissolve readily in water and so are called hydrophilic ("water loving"). Uncharged or non-polar molecules such as lipids do not dis...
AP
Answered by Asya P. • Biology tutor
20170 Views

What is 'completing the square' and how can I use it to find the minimum point of a quadratic curve?

Completing the square is a process used to put a quadratic curve into a particularly nice form. The form we want is y(x) = r(x+s)^2 + t for some numbers r,s, and t. A 'general' quadratic we would expect to b...
TP
Answered by Thomas P. • Maths tutor
6062 Views

Is GDP a good indicator of vulnerability to natural disasters?

Economic income and Gross Domestic Produce (GDP) is often a very useful indicator of vulnerability of an institution (may that be a country, communtiy or household) to a natural disaster. Economic income can...
IK
3706 Views

Intergrate ln(x) with resepct to x

To integrate this, we use the product rule. Think of it as intergrate [ 1 x ln (x)]. As by the product rule we chose one to intergrate and one to differentiate. We intergrate 1 to get x. We differentiate ln ...
LP
Answered by Leo P. • Maths tutor
4829 Views

When should I use the subjunctive?

Of course, there are thousands of phrases and situations in which the subjunctive becomes necessary in French. Therefore, the best way to remember when to use it is with the mnemonic WEDDINGS: W: Wish / Will...
WD
Answered by Will D. • French tutor
2811 Views