Top answers


What happens in the process of eutrophication?

1. Fertilisers are washed into waterways by rain or irrigation. 2. The increased availability of nutrients causes aquatic plant life to grow rapidly. 3. An algal bloom occurs, obscuring light from the plants...
AA
Answered by Alexander A. • Biology tutor
11867 Views

What is the difference between speed and velocity?

Speed and velocity may seem like identical measures but this is not the case. Speed is a scalar measurement meaning it only takes into account magnitude not direction, velocity is a vector quantity and there...
AA
Answered by Alexander A. • Physics tutor
9781 Views

Differentiate a^x with respect to x

y=a^x take natural logs (also written as ln or log base e) of both sides lny=lna^x by logarithms rules lna^x=xlna lny=xlna Now differentiate implicitly 1/y = (dx/dy)lna Note here lna is just a constant, then...
JM
Answered by James M. • Maths tutor
43296 Views

Resolving the forces for an object suspended on two strings.

Imagine a following situation: a stationary (not moving) object with a mass of 5 kg is suspended in the air by two strings. The angles between strings and the vertical directions are 15 and 55 degrees. What ...
FW
Answered by Filip W. • Physics tutor
20363 Views

How do I learn vocabulary and grammar very well?

It can be difficult to get vocab and grammar point cemented in your head but the trick is to cover the word and repeat it to yourself. You must do this regularly and look over your notes every few days as th...
SD
Answered by Sarah D. • Spanish tutor
3051 Views