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If A is divided by B, the result is 5/7. If B is divided by C, the result is 4/5. What is the result of A divided by C ?

A=5 when B=7, B=4 when C=5. (Using Ratios, 5:7 & 4:5) Knowing the relationship between both A & C with B means that we can find the relationship between A&C themselves. (A=5, B=7)*4 ; A=20 when B...
IA
Answered by Inez A. • Maths tutor
3622 Views

How do you balance an equation

First write out the equation given:Na + O 2 —> Na 2 ONow count how many oxygen atoms are on the LHS of equation (2) and how many are on the RHS (1). This means you must put a 2 in front of the Na 2 O to B...
LS
Answered by Lauren S. • Chemistry tutor
2638 Views

What are the main differences between different loops when it comes to coding ?

This question is relevant to different coding languages, and it can be easily explained using Java language : for instance, we will use an integer array called FOR:for(int i=0;i<ArrayList.size();i++) the ...
GB
2081 Views

In an electric propulsion system, alpha particles are accelerated through a potential difference of 100kV at an average rate of 10^20 alpha particles per second. Calculate the average thrust the system can provide.

Take the mass of alpha particle to be 6.64 10^-27 kg accurate to 3 s.f. Note that the the work done in an electric field accross a potential difference is E = QV, where Q is the total charge of the alpha par...
AA
Answered by Alexandru A. • Physics tutor
3607 Views

How do I use my own knowledge in a Section A source analysis question?

You should use your own knowledge (OK) about the question as a lens through which to analyse the four sources. Instead of simply deploying OK to answer the question directly, use it to examine the provenance...
AN
Answered by Alexander N. • History tutor
7130 Views