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What is an isotope?

Each element has a unique number of protons. For example, every carbon atom contains 12 protons. The number of neutrons can differ for each "form" of the same element - this is known as an isotope....
JG
Answered by Joanna G. • Chemistry tutor
4819 Views

Find the volume of revolution when the area B is rotated 2 pi radians about the x axis

First must recall the formula, of pi multiplied by the integral of y 2 After this, the correct integration should be applied, using an appropriate method that the student has learnt The correct limits used i...
LS
Answered by Louis S. • Maths tutor
10037 Views

How best to answer a question on how negative externalities lead to market failure.

When answering a question of this kind I like to use te acronym NOPOWA to ensure I hit all the key points. It is always good to draw the graph showing the negative externality to help illustrate your answer ...
ET
Answered by Erin T. • Economics tutor
6040 Views

How can globalisation increase domestic competitiveness?

An increase in globalisation means that there are more companies competing for a domestic companies consumers increasing the competition they have to face.This then means that those ompanies have an incentiv...
ET
Answered by Erin T. • Economics tutor
3187 Views

Solve the following, giving your answers in terms of ln a: 7 sechx - tanhx =5

7sechx - tanhx = 5 7/coshx - sinhx/coshx = 5 7 - sinhx = 5 cosh x 7 - 0.5(e x - e -x ) = 2.5(e x + e -x ) 7 -0.5e x + 0.5e -x = 2.5e x + 2.5e -x 0 = 3e x - 7 + 2e -x 0 = 3e 2x - 7e x + 2 0 = (3e x - 1)(e x -...
AW
8410 Views