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How do you deal with 3 simultaneous equations? (Struggling with Q7 of AQA specimen paper 1)

If you need to solve them, then you just plug your way through the algebra to get to the answer. In this question (Q7) you need to find the value of a constant such that there is no solution to the three equ...
JW
3774 Views

How do you work out compound interest?

Check whether student can calculate simple interest, e.g. How much money would you have after 1 year if you have £50 and get 3% interest? (Ans: 50*1.03 = 51.50) Once this is understood get them to calculate ...
JW
Answered by Joanna W. • Maths tutor
4084 Views

what would be the mass required to keep an object with a mass of 250kg orbiting at a constant distance of 100km with a linear velocity of 100m/s?

the linear speed of an orbiting body is given by the equation sqrt(GM/2r) where M is the mass of the attracting body, G is the gravitational constant and r is the distance between the two bodies' centres of ...
MA
Answered by Michael A. • Physics tutor
2391 Views

What is the Young's modulus of a material?

The Young's modulus is a measure of the stiffness of the material - higher the young's modulus, higher the stiffness. It is calculated by dividing stress by strain over the elastic deformation region and is ...
MS
Answered by Manika S. • Physics tutor
2642 Views

My experience with the UKCAT?

Without a doubt, the timing was the most challenging aspect. To start with I didn’t do questions timed, just to get a feel on how to approach questions but fairly soon I started timing myself, being very str...
CD
Answered by Chaitya D. • UCAT tutor
2848 Views