Top answers

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
9518 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
43085 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
19912 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
2925 Views

Explain why your genes might influence how drugs work in the body. (3)

Some drugs need to be converted into other molecules so the body can use them effectively. This conversion is done by enzymes, which are protiens. Protiens are made up of amino acids, which are coded for by ...
MB
Answered by Molly B. • Biology tutor
7698 Views