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When will I ever need to use this in real life?

Maths is something you can make use of for the rest of your life.Obviously, there are a vast number of jobs out there, such as engineering, which use mathematics everyday so if that's the sort of thing th...

AM
Answered by Alex M. Maths tutor
3147 Views

Can you please explain the basics of electricity? I can do the maths but I don't understand what 'voltage', 'current' or 'resistance' actually is!

The fundamental unit of electricity is 'charge'. Each electron is slightly negatively charged and it is this movement of charge around a circuit which powers our appliances. The speed of the electrons/the...

AM
Answered by Alex M. Physics tutor
3276 Views

15g of Magnesium is burned, what mass of magnesium oxide is formed ?

  1. Write out the equation when Magnesium is burned to produce Magnesium oxide: 2Mg + O2 > 2MgOMagnesium to Magnesium oxide is 1:12) Work out the number of moles present in 15g of Magnesium: Moles = ...
CR
Answered by Carlin R. Chemistry tutor
3904 Views

How do I solve the simultaneous equations 5x+2y=11 and 4x-3y=18?

Simultaneous equations have two or more unknown values, in this case there are two: x and y. To solve them, first we need to get one unknown by itself. In order to do this we need the coefficient of eithe...

HT
Answered by Helen T. Maths tutor
6756 Views

Explain the 2 ways in which a reduction in interest rates can change consumption in the aggregate demand model of the economy.

Consumption - a reduction in interest rates means that the cost of borrowing money for consumers is lower. This means that consumers demand more money in order to consume. Large purchases become relativel...

JY
Answered by James Y. Economics tutor
3157 Views

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