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Why do metals conduct electricity?

To answer this question we need to think about the bonding that occurs within metals. Metallic elements form strong lattices due to the metallic bonding. This consists of a lattice of positive metal atoms...

AM
Answered by Alex M. Chemistry tutor
16296 Views

I want to pave my patio, which has dimensions of 6m by 8m. I'm going to pave it with stones that have dimensions of 50cm by 50cm. Each tile costs £1.50. How much will paving my patio cost me?

My patio has an area of 68 m , so 48m2.
Each tile has an area of 0.5
0.5 m, so 0.25m2.
To find the number of tiles we need, we divide the area of the patio by the...

DL
Answered by Danny L. Maths tutor
2383 Views

Integrate ((5x^3) + ((2x)^-1) + (e^2x))dx.

int(5x3 + (2x)-1 + e2x )dx

=int(5x3)dx + int((2x)-1)dx + int(e2x )dx

int(5x3)dx = (5/4)x4+ c          ...

DL
Answered by Danny L. Maths tutor
4264 Views

Fully simplify (8a^2b * ab^4)/(2a^3b^2)

8a3bab4 2a3b2 (can write this more clearly by hand using whiteboard) First go about seperating and collecting terms. Begin with the top line. ...

AI
Answered by Archie I. Maths tutor
3662 Views

Given that x(a+bx)(a-bx)=25x-4x^3, what is the value of b^(-a)? a,b>0

It's a two part question. First Part Expand the equation the left hand side to get a^(2)*x-b^(2)*x^3 thus comparing co-efficients a^2=25 and b^2=4 thus a= 5 b=2 Second Part Therefore b^(-a) ...

CP
Answered by Cameron P. Maths tutor
9124 Views

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