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*MEGATHREAD* - BMAT for 2016 Entry Discussion
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Original post by
No, i think the bmat has just messed up my head. :'(
Haha, I totally understand, dw
Original post by aspiring_
I did this question yesterday, worked it out, and now forgotten it 
( but i'll try again 
)
( but i'll try again )Ah great great, thanks!!
Original post by thechemistress
Haha, I totally understand, dw
Ah great great, thanks!!
Ah great great, thanks!!
Got it
4 different dates for September would be 01/09, 04/09, 16/09 and 25/09Just say for 01/09 there would be 8 outcomes being 04:16, 04:25, 04:36, 04:49, 16:04, 16:25, 16:36 and 16:49
This would be repeated
therefore (8*4)+4(extra from 25/09) gives 36
It seems impossible to answer without calculator. I eventually get to 813/4/3 and dont know where to go from there ?
Original post by koolgurl14
It seems impossible to answer without calculator. I eventually get to 813/4/3 and dont know where to go from there ?
The way I did this was to do 81^3. Then just guess numbers that x^4=81^3. I assumed it would have to be a multiple of 3 because otherwise wouldn't give a whole number. 27^4=81^3 so 27/3=9
Original post by koolgurl14
It seems impossible to answer without calculator. I eventually get to 813/4/3 and dont know where to go from there ?
32 to the power of 1/5 means root 5, and that's 2.
9 to the power of 0 is 1.
81 to the power of 3/4 means root 4 cube, and that's 27.
3/27 to the power of -1 means 1/9 to the power of -1 and 9.
Hence 9 should be the answer!
edit: if you're not familiar with the numbers, just try and fit numbers in! these numbers are meant to whole numbers so when you see roo 5 of 32 just start small and see which numbers match.
(edited 8 years ago)
Original post by koolgurl14
It seems impossible to answer without calculator. I eventually get to 813/4/3 and dont know where to go from there ?
3^4 is 81
Original post by aspiring_
Got it 4 different dates for September would be 01/09, 04/09, 16/09 and 25/09
Just say for 01/09 there would be 8 outcomes being 04:16, 04:25, 04:36, 04:49, 16:04, 16:25, 16:36 and 16:49
This would be repeated
therefore (8*4)+4(extra from 25/09) gives 36
4 different dates for September would be 01/09, 04/09, 16/09 and 25/09Just say for 01/09 there would be 8 outcomes being 04:16, 04:25, 04:36, 04:49, 16:04, 16:25, 16:36 and 16:49
This would be repeated
therefore (8*4)+4(extra from 25/09) gives 36
Thanks so much! I was being dumb, I kept using 09/09 as a date and then 09 as an hour number too
thanks hey guys has anyone done the 2015 specimen paper and what score did you guys get for that? is it higher than your usual? i found it easier than past papers is that normal?? thanks
Original post by koolgurl14
It seems impossible to answer without calculator. I eventually get to 813/4/3 and dont know where to go from there ?
Is the answer 9?
Original post by BlueReptiles
3^4 is 81
Thank u exactly wht i needed.
Thank for the other replies too .
Original post by aspiring_
Is the answer 9?
Yeah it is!
I dont get it when there is parallel inside parallel :/
Original post by koolgurl14
I dont get it when there is parallel inside parallel :/
:/ is it F?
Original post by koolgurl14
I dont get it when there is parallel inside parallel :/
Just ignore the double parallel and consider each circuit separately.
Give each resistor a certain resistance, lets go with 100 ohms. And the same for the power source, lets say 100V
Now for the first circuit (only 2 resistors) as they are in series the total resistance is 100+100= 200.
As we know voltage is directly proportional to resistance R1 gets half the total voltage, 50V. As (100/200)*100 is 50.
Now for the other circuit.
Find the resistance of the parallel resistors which is 50 ohms. As the inverse of (1/100)+(1/100) is 50.
So the total resistance of the second circuit is 100 + 50. (the resistor R2 is in series to the parallel resistors so just add the resistances)
Now find the proportion of resistance R2 holds as compared to the whole circuit. R2 is 100 ohms out of 150 total ohms. So the R2 gets 66.67V. ( As 100/150 * 100= 66.6667)
Now each resistor in the parallel circuit gets an equal amount of voltage. So the proportion of resistance of R3 is 50/150. So R3 gets 50/150*100= 33.33V.
So
R1= 50V
R2= 66.67V
R3= 33.33V
In increasing order is R3, R1, R2
This is really long because I wanted to show you the complete reasoning.
In the exam the mental process should be:
1. R1 is easily seen as half voltage
2. As their is a parallel circuit in series with R2. R2 gets more than half, and R3 gets less than half.
Then boom you got the right answer in like 15 seconds.
(edited 8 years ago)
Hey guys,
Just wondered if anyone would mind giving me some feedback on one of my practice essays.
People injured whilst participating in extreme sports should not be treated by a publiclyfunded health service.Explain the reasoning behind this statement. Suggest an argument against this statement. Towhat extent, if any, does the statement justify a change in public attitudes to personal risktaking?
This statement suggests that any injury suffered by extreme sports participants is unnecessary and the fault of said participant. It insinuates that healthcare funded by the taxpayer should not be used to treat easily avoidable injury.
The flaw in this argument lies within the boundaries set if it were to be implemented. At what point are people deemed to be putting themselves at unnecessary risk? For example, it could be said that someone who regularly cycles on busy roads is exposing themselves to avoidable danger, similarly to someone who participates in extreme sports.
However, the benefits of regular cycling on our health are seen to outweigh the risks, perhaps even potentially reducing a person's reliance on public healthcare in future. The same logic could be applied to extreme sports, many of which carry significant benefits to long-term cardiac and respiratory health, despite the immediate risk of the injury.
The statement takes the stance that personal risk taking should not impact on the general population financially via the use of taxes in this way. In the event of participants being refused public healthcare for injuries sustained during extreme sports, it is undoubted that many people would reevaluate the true necessity of the danger they may be exposing themselves to.
In the UK, we are lucky enough to have free access to the NHS, but this does perhaps make us complacent in our appreciation of good health. By removing this unlimited access, the population as a whole would certainly reconsider the importance of preserving our own well being and limiting the danger we expose ourselves to.
Thank you!!
Just wondered if anyone would mind giving me some feedback on one of my practice essays.
People injured whilst participating in extreme sports should not be treated by a publiclyfunded health service.Explain the reasoning behind this statement. Suggest an argument against this statement. Towhat extent, if any, does the statement justify a change in public attitudes to personal risktaking?
This statement suggests that any injury suffered by extreme sports participants is unnecessary and the fault of said participant. It insinuates that healthcare funded by the taxpayer should not be used to treat easily avoidable injury.
The flaw in this argument lies within the boundaries set if it were to be implemented. At what point are people deemed to be putting themselves at unnecessary risk? For example, it could be said that someone who regularly cycles on busy roads is exposing themselves to avoidable danger, similarly to someone who participates in extreme sports.
However, the benefits of regular cycling on our health are seen to outweigh the risks, perhaps even potentially reducing a person's reliance on public healthcare in future. The same logic could be applied to extreme sports, many of which carry significant benefits to long-term cardiac and respiratory health, despite the immediate risk of the injury.
The statement takes the stance that personal risk taking should not impact on the general population financially via the use of taxes in this way. In the event of participants being refused public healthcare for injuries sustained during extreme sports, it is undoubted that many people would reevaluate the true necessity of the danger they may be exposing themselves to.
In the UK, we are lucky enough to have free access to the NHS, but this does perhaps make us complacent in our appreciation of good health. By removing this unlimited access, the population as a whole would certainly reconsider the importance of preserving our own well being and limiting the danger we expose ourselves to.
Thank you!!
Original post by silverskyx
:/ is it F?
It's E
Original post by aspiring_
Does anyone get this refraction question? 
Thanks
Thanks
is it E?
Original post by Sketches
Just ignore the double parallel and consider each circuit separately.
Give each resistor a certain resistance, lets go with 100 ohms. And the same for the power source, lets say 100V
Now for the first circuit (only 2 resistors) as they are in series the total resistance is 100+100= 200.
As we know voltage is directly proportional to resistance R1 gets half the total voltage, 50V. As (100/200)*100 is 50.
Now for the other circuit.
Find the resistance of the parallel resistors which is 50 ohms. As the inverse of (1/100)+(1/100) is 50.
So the total resistance of the second circuit is 100 + 50. (the resistor R2 is in series to the parallel resistors so just add the resistances)
Now find the proportion of resistance R2 holds as compared to the whole circuit. R2 is 100 ohms out of 150 total ohms. So the R2 gets 66.67V. ( As 100/150 * 100= 66.6667)
Now each resistor in the parallel circuit gets an equal amount of voltage. So the proportion of resistance of R3 is 50/150. So R3 gets 50/150*100= 33.33V.
So
R1= 50V
R2= 66.67V
R3= 33.33V
In increasing order is R3, R1, R2
This is really long because I wanted to show you the complete reasoning.
In the exam the mental process should be:
1. R1 is easily seen as half voltage
2. As their is a parallel circuit in series with R2. R2 gets more than half, and R3 gets less than half.
Then boom you got the right answer in like 15 seconds.
Give each resistor a certain resistance, lets go with 100 ohms. And the same for the power source, lets say 100V
Now for the first circuit (only 2 resistors) as they are in series the total resistance is 100+100= 200.
As we know voltage is directly proportional to resistance R1 gets half the total voltage, 50V. As (100/200)*100 is 50.
Now for the other circuit.
Find the resistance of the parallel resistors which is 50 ohms. As the inverse of (1/100)+(1/100) is 50.
So the total resistance of the second circuit is 100 + 50. (the resistor R2 is in series to the parallel resistors so just add the resistances)
Now find the proportion of resistance R2 holds as compared to the whole circuit. R2 is 100 ohms out of 150 total ohms. So the R2 gets 66.67V. ( As 100/150 * 100= 66.6667)
Now each resistor in the parallel circuit gets an equal amount of voltage. So the proportion of resistance of R3 is 50/150. So R3 gets 50/150*100= 33.33V.
So
R1= 50V
R2= 66.67V
R3= 33.33V
In increasing order is R3, R1, R2
This is really long because I wanted to show you the complete reasoning.
In the exam the mental process should be:
1. R1 is easily seen as half voltage
2. As their is a parallel circuit in series with R2. R2 gets more than half, and R3 gets less than half.
Then boom you got the right answer in like 15 seconds.
I was just gonna ask if there is fater way, but I see how it works now makes a lot of sense thank you so much !
Original post by tehtarik
Is the answer 150? How I did it is that (0.06-0.04) : (0.09-0.06) = 2:3
So there should be 3 units of ES for every 2 Units of CCF.
so 100ml * 3/2 = 150ml
So there should be 3 units of ES for every 2 Units of CCF.
so 100ml * 3/2 = 150ml
Thanks that helps a lot
Original post by tehtarik
Okay so the no. of tiles he can buy is 140/2.8 = 50.
So the rectangle with twice the length as it does width is 5*10 tiles.
So the width of the rectangle is 5*70cm = 3.5m
Width of flower bed = 5m - 3.5m = 1.5m
So the rectangle with twice the length as it does width is 5*10 tiles.
So the width of the rectangle is 5*70cm = 3.5m
Width of flower bed = 5m - 3.5m = 1.5m
That makes a lot more sense now thank you
(edited 8 years ago)
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