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Re: Science quiz everyone. I need your help all!
A wine glass will produce sound if you rub the edge of it with a wet finger. What will happen with the tone if your going to fill the glass?
-The tone will be higher
-The tone will be lower
-The tone will be the same.
Higher frequencey, due to the liquid lowering the amount of glass the sound will resonate from.
Third Question.
A good swimmer tries to swim 6 kilometers. The water has a temperature of 37 degrees Celcius. What will happen?
-He will swim slower than he expected.
-He will swim faster than he expected, because the temperature is ideal for his mucels.
-He won’t make the finish.
This is a no-brainer. He won't make the finish. I'd go as far as saying it's a physical impossibility for any human being to swim this far in this temperature of water. He/she would probably drown from exhaustion.
Fifth Question.
Which wheel will spin harder? If you take a turn with a bicycle, both wheels are equally big.
-The front one.
-The rear one.
-Both wheels spin equally hard.
This is really a question of physics. If by "harder" you mean faster, then in a perfect environment they will spin exactly the same since they are connected via the bike from and are on a flat surface. However, if you mean harder as in force, then the back wheel will be exerting more force since it is directly connected to the pedals via chain, and is indeed providing the thrust and force for the entire bicycle. So... be more specific.
Sixth Question
You have a bag with a white ball in it. You put BLINDLY a red or a white ball with it. Then you take blindly a ball out from the bag, and this ball seems to be white. How big is the chance that the ball that got left in the bag, white is?
-1/2
-2/3
-3/4
3/4, as many people have stated before this. It's easy and basic fractions... The chances of a two white balls being in the bag is 1/2. (and 1/2 for a red/white combo.) So, 1/2 of the time, the one you pick will always be white. For the 1/2 of the time that there is a red/white ball in the bag, there is a 1/2 chance that the ball you choose is white. Hence, 3/4 as a total chance the ball you choose is going to be white.
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