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Describe and explain the events that occur in full contraction of the heart

-To start the sinoatrial node (SAN) on the wall of the right atrium sends an electrical signal across the right and left atria to contract and the blood moves into the ventricles. A layer of non-conductive t...
RP
Answered by Rosie P. • Biology tutor
3170 Views

Solve the simultaneous equations 3x+2y=4 and 4x+5y=17 for x and y

Rearrange one of the equations to get x equals an equation in terms of y.3x+2y=4Take 2y away from both sides3x=4-2yDivide both sides by 3x=(4-2y)/3Substitute this into the other equation in place of x4((4-2y...
JC
Answered by Jack C. • Maths tutor
7783 Views

What should I expect from a Biology interview at Oxford

First, you must remember that one of the main purposes of Oxbridge interviews, aside from seeing whether you would cope with the academic standard, is as an opportunity for the tutor to assess your character...
HT
3665 Views

Simplify 3log(x^2)+4log(y^3)

Using rules of logarithms: 3log(x^2)+4log(y^3)=log((x^2)^3)+log((y^3)^4) =log(x^6)+log(y^12) =log((x^6)(y^12)
AC
Answered by Alexander C. • Maths tutor
4774 Views

Draw the electric field lines produced by a negative point charge and calculate the electric field strength at a distance of 50mm from a point charge of size -30nC.

The diagram should show a negative point charge with the electric field lines pointing towards the point charge. The separation of the lines should decrease as you get closer to the point charge. The lines s...
JB
Answered by Jemima B. • Physics tutor
3559 Views