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What is meant by the term specific heat capacity?

Specific heat capacity does tell you how much energy a substance needs to increase their temperature and so substances with a low specific heat capacity (SHC) will increase in temperature more rapidly than t...
TM
13831 Views

How do I solve simultaneous equations graphically? e.g (1) 4x - 3y = 11 (2) 3x + 2y = 4

Firstly, let's rewrite each of these equations as the equation of a line i.e. in terms of y. So we have: (1) y = 4x/3 - 11/3 (2) y = 2 - 3x/2 Draw line (1) on a graph. The (x,y) co-ordinates of any point on ...
DL
Answered by Daniel L. Maths tutor
4006 Views

Jodie buys 12 cans of cola. There are 330 ml of cola in each can. Rob buys 4 bottles of cola. There is 1 litre of cola in each bottle. Rob buys more cola than Jodie. How much more?

The answer is: (4X1000)-(12X330)= 40, ao 40 ml more. You may wonder why 1 litre is 1000, as 1 litre of cola= 1000 ml of cola so we have to convert 1 L to 1000ml in the anwer. Rob buys more cola than Jodie me...
MK
Answered by Michelle K. Maths tutor
3807 Views

Calculate the volume of revolution generated by the function, f(x) = (3^x)√x, for the domain x = [0, 1]

First we recall the general formula for the volume of revolution: V = π ∫ [f(x)]² dx Substituting our function, this gives: V = π ∫₀¹ (3^x)² x dx We could write (3^x)² as 3^(2x), or we could notice that this...
RH
Answered by Reece H. Maths tutor
6322 Views

How to I factorise a quadratic equation?

I think the best way to show how to do this is with an example "Factorise 6x 2 + 7x - 3" Looking at that expression, we can't factorise it straight away, so we'll have to rewrite it in a way that a...
DB
Answered by Daisy B. Maths tutor
6097 Views