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Describe how a healthy kidney produces urine

At the Bowman's Capsule, the blood undergoes ultrafiltration. This is when the smaller molecules in the blood are forced through the partially permeable membrane of the Bowman's Capsule. This is because the ...
JJ
Answered by Jacob J. • Biology tutor
4466 Views

Why do angles in a triangle add to 180?

We know that angles on a straight line add to 180 degrees. Now imagine you have a triangle and the angles are called A, B and C. We can orientate the triangles so that we form a straight line. We can see tha...
AK
Answered by Aaran K. • Maths tutor
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Why does the pH of neutral water drop when it is left out in an uncovered container on a worktop for a long period of time?

This question tests your knowledge on; the properties of non-metal oxides in solution, the concept of equilibrium, pH. Non-metal oxides such as (CO2, P4O10, SO2, etc) are acidic in solution. When left out on...
NG
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Using the quadratic formula factorise 2x^2 + 7x + 11 =0

Using the substitutions a=2, b=7 and c=11 with the quadratic formula we get two values of x at 3.39 and 0.89.
EA
Answered by Emily A. • Maths tutor
6940 Views

What are partial fractions for and how do I find them?

Being able to find partial fractions is very useful for complex algebraic fractions that cannot be intergrated in their current form. Breaking it down into a sum of it's partial fractions gives two (or more)...
CT
Answered by Christine T. • Maths tutor
4422 Views