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A gun of mass 10kg fires a bullet of mass 240g at a speed of 300ms-1. What is the speed of the gun's recoil?

First, convert the mass of the bullet into SI units -> 240g=0.24kg

The law of the conservation of momentum states that m1v1=m2v2. To find the speed of...

JF
Answered by Jonny F. Physics tutor
2681 Views

A circle with centre C(2, 3) passes through the point A(-4,-5). (a) Find the equation of the circle in the form (x-a)^2 + (y-b)^2=k

This question is aimed at A-Level Pure Core 1 students. A circle with centre C(2, 3) passes through the point A(-4,-5).  Find the equation of the circle in the form (x-a)^2 + (y-b)^2 = k ...

TC
Answered by Tilly C. Maths tutor
5098 Views

What is meant by ‘determinism’ and what are the different types I need to know for the AQA paper 3 exam?

Determinism refers to the understanding that all human behaviour is controlled and has an identifiable cause. It is the opposite to ‘free will’ which refers to individuals having active control over their...

JF
Answered by Jodie F. Psychology tutor
41631 Views

Prove by induction the sum of the natural numbers from 1 to n is n(n+1)/2

Need whiteboard throughout to properly answer, so will go through the ideas of what to do:

Take the base case of when n=1, and show that            (sum from 1 to 1) j = n(n+1)/2       is equal to ...

OO
2627 Views

What is the difference between hardwood and softwood?

Softwood is coniferous (like pine) meaning that the tree grows quickly and has large growth rings. This makes for a softer structured material that is easy to cut.
Hardwood refers to to non-conifero...

LD
3213 Views

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