Top answers

Why are metals good conductors of electricity?

Metals form metallic bonds, where unlike in covalent or ionic bonding, electrons are delocalised. This means the electrons can move freely throughout the metallic structure. Electricity is the flow of electr...
OK
Answered by Olivia K. • Chemistry tutor
51449 Views

The equation of line A is y = 6x -4. The equation of line B is 2y - 12x + 14 = 0. Are these two lines parallel?

Line A has a gradient of 6, because it is in the form y = mx + c, where m=6. Line B can be rearranged to y= 6x - 7, so the gradient is also 6. The gradient of both lines is the same, so they are parallel.
ML
Answered by Matthew L. • Maths tutor
3817 Views

Discuss the varying patterns of migration into the UK since the end of the second world war.

There are different components to this question: Migration into the UK continues to change on a consistent basis. In the past, following the end of the war this saw an influx of families on a large scale fro...
AP
Answered by Akul P. • Geography tutor
2238 Views

During take-off from earth, an astronaut of mass 76kg has an area of contact with his seat of 0.095m^2. Calculate the average pressure on the seat when the upward acceleration of the rocket is 47ms^-2

There are two parts to this question that we should consider seperately: Firstly, we need to work out the total thrust force that is being applied through the seat onto the astronaut. Critically, this is the...
ON
Answered by Oliver N. • Physics tutor
2359 Views

Find, using calculus, the x coordinate of the turning point of the curve with equation y=e^3x cos 4

1st step: find the derivative dy/dx of the given equation2nd step: now equate the obtained derivative to 0 because this is precisely the situation in which the graph changes direction (the derivative dy/dx e...
UW
Answered by Urszula W. • Maths tutor
4629 Views