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Quiz
May 26, 2018 0:26:12 GMT
Post by Deleted on May 26, 2018 0:26:12 GMT
It's too boring just answering questions like that.
Either link to a timed thing or do a one-off puzzle.
Entertainment value is key.
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Quiz
May 26, 2018 9:56:45 GMT
Post by Flying Monkeys on May 26, 2018 9:56:45 GMT
1. Totally obvious, more frames per second is the answer. You never did those page-by-page flick-book animations when you were a child? The more pictures you had representing a movement, the smoother the movement.
2. At any given pressure, there is a certain temperature below which water will be vapour (i.e. clouds) and above which it is in gaseous form (i.e. invisible). As the air holds a temperature gradient, there is therefore a certain altitude above which vapour can exist (hence the cloud can be seen at varying heights above that level) but below which the vapour cannot be seen, hence it is an absolute flat line.
3. Normal rotational speed for a car engine if 3000 rpm. Helicopter significantly bigger so likely to be slower. Cannot possibly be 30 rpm because you would see the blades at that speed, hence it has to be 300 rpm.
4.1 When are they first all off?
On On On Off Off Off On On On On Off Off Off On On On On On Off Off Off Off Off
They are all off for the first time in the 6th second.
4.2 When do they next all come on for the first time?
The 1st goes through a cycle of 6 seconds. The 2nd goes through a cycle of 8 seconds.
The 3rd goes through a cycle of 10 seconds.
So we need to find the next time (after the 1st second) that cycles of 6, 8 and 10 seconds all finish together. The next time they all come on together will be 1 second after that.
So we need to find the lowest number that is a multiple of 6, 8 and 10.
6 x 8 x 10 = 480.
Half it = 240. Is 240 divisible by 6, 8 and 10? Yes.
Okay, half it again. Is 120 divisible by 6, 8 and 10? Yes.
Okay, half it again. Is 60 divisible by 6, 8 and 10? No. Hence they all finish a cycle at 120 second, so they all come back on in the 121st second.
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