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Explain the difference between covalent and ionic bonding.

In covalent bonding 2 or more atoms share electron in their outter shells to give them all full outer shells. In ionic bonding one atom donates one or more electons to another atom, the donating atom becomes...
RS
Answered by Rachel S. • Chemistry tutor
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ABCD is a regular paralleogram, A=(2,1) B=(7,2) and C=(4,6), work out the gradient of the line CD and then work out the area of ABCD.

As its a parallelogram the gradient of CD will be the same as the gradient of AB so you just need to work out the gradient of AB using the formula (y 2 -y 1 )/(x 2 -x 1 ) which would be (2-1)/(7-2)= 1/5 or 0...
RS
Answered by Rachel S. • Maths tutor
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Differentiate arctan(x) with respect to x

We can set arctan(x) = y. Remember that arctan(x) is the inverse of tan(x), so we can take the tangent of both sides to give: tan(arctan(x)) = x = tan(y). Tan(x) has the standard derivative of sec^2(x) (whic...
SE
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A uniform ladder of mass 5 kg sits upon a smooth wall and atop a rough floor. The floor and wall are perpendicular. Draw a free body diagram for the ladder (you do not need to calculate any forces).

Diagram should include two orthogonal lines, representing the wall and floor. Connecting them should be a diaganol line (the ladder) At the midpoint of the line should be a vertical downward arrow whose head...
DG
Answered by Dean G. • Maths tutor
3762 Views

How do I factorise quadratic equations into brackets?

I would go through with the tutee the 4 steps that would
JG
Answered by Josh G. • Maths tutor
3521 Views