Search over 10,000 free study notes

The reaction that is occuring is a substitution reaction as ethan is already a saturated molecule. The ultraviolet light provides the energy needed to break the bonds between hydrogen and carbon in eth...

In order to solve this question we need to use the principle of conservation of momentum which states:

The momentum in a closed system remains constant before and after a collision or exp...

The first step in solving any trigonometric equation is to convert everything into sine and cosine functions. So in this case we need to start by converting the tanA. We can use the identity: tanA=sinA...

Firstly set 2sinhx+3coshx=5Now using the exponential definitions of sinhx and coshx rewrite the equation to give:2(1/2(e^x-e^-x))+3(1/2(e^x+e^-x))=5Simplify the equation by expanding out the brackets, mul...

Percentage change is often required to utilise figures provided in case studies and present them as evidence, or to use in other calculations.

For example:

If you were asked...