I let theta be the angle between the string and the normal, and then saud tan(theta)=(gravity force)/(centripetal force). This was assuming the car was turning. I then reaarranged to find v, but im not sure if its right. I have to try it out
Lol. I also got 69 with q10 wrong (misread it horribly even though i checked it like 5 times). I think 100 raw definitely AND a great 4u mark are necessary for state rank
Actually, i get it now i think. The voltemeter's positive and negative terminals are such that they indicate the direction of current going through voltemeter rathwr than around the curcuit
So the way a voltemeter's terminals works is such that they are arrnaged oppositely to a cell/battery? I ask this because for a cell, 'negative current' ia from negative to positive, and 'postive' current is from positive to negative, but you suggest that for a voltemeter current going from the...
In this question, I get the correct graph, except it is the negative of what the answers say (answers say initially voltage is, negative but I keep getting positive). I have a feeling it has something to deal with conventional vs actual current. Does anyone know why? The reason I say induced...
This has been discussed before, but in your opinion would the substitution of water with chloroethane (using sulfuric acid catalyst) to produce ethanol be suitable as an answer for question 34, step 1?
For 23 b, could you say to make the flame closer to the beaker to minimise heat loss? I feel like I've also seen it in a past paper, but that's what I wrote
Edit: I now realise you included this, but I didn't explicity mention HOW you would make the flame closer. I just said to move it closer to...
For 21c, I wrote about the permanganate test, but I didn't talk about confirming it using sodium carbonate. Do we actually need the sodium carbonate test aswell?
You or someone else previously mentioned that they 'forgot' to talk about how esterification produces water when it was mentioned that reagents need to be stated. So, do we actually need to state what was produced as a byproduct?