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1

Tuesday, September 3rd 2019, 7:34pm

Back to School Week - Tuesday: Physics!



And here is the example for the Tuesday - Physics!

What does synthesis gas (water gas) consist of?

1. oxygen (O2) and hydrogen (H2)
2. methane (CH4) and water (H2O)
3. carbon dioxide (CO2) and hydrogen (H2)
4. carbon monoxide (CO) and hydrogen (H2)

Event description and rules


Thread will close Wednesday, 11th of September, 11h59 server time.

This post has been edited 2 times, last edit by "Liusaidh" (Sep 25th 2019, 12:14pm)


2

Tuesday, September 10th 2019, 12:17pm

4. carbon monoxide (CO) and hydrogen (H2)

3

Tuesday, September 10th 2019, 12:32pm

Okay, so I don't think example question counts as a question, so I'll ask the first one. (:

What is a vector?

1. A magnitude with a direction.
2. An indirect result of horizontal internal forces in buildings such as bridges.
3. An arrow.
4. A theory in quantum physics.

4

Tuesday, September 10th 2019, 12:37pm

1. A magnitude with a direction.

5

Tuesday, September 10th 2019, 12:38pm

1. A magnitude with a direction.
Correct!

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7

Tuesday, September 10th 2019, 1:04pm

what is e=mc^2
It's the equation for the theory of relativity.
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8

Tuesday, September 10th 2019, 1:05pm

what is e=mc^2
It's the equation for the theory of relativity.
correct

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9

Tuesday, September 10th 2019, 1:15pm

Just a general question: Could it also be a chemistry question (like in the example) or should our questions be solely about Physics?
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10

Tuesday, September 10th 2019, 1:33pm

the cook lays a boiled egg to the raw one. When he realizes this and he wants to correct the mistake, he sees only twelve externally identical eggs.
How can he find out the boiled, without tools and without damaging the shell?

11

Tuesday, September 10th 2019, 2:10pm

What number describes how a fluid flows and is used to determine whether a flow is turbulent or laminar?

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12

Tuesday, September 10th 2019, 2:33pm

the cook lays a boiled egg to the raw one. When he realizes this and he wants to correct the mistake, he sees only twelve externally identical eggs.
How can he find out the boiled, without tools and without damaging the shell?


No answer. received..

Correct Would have been:
Just rotate and stop egg - and release it again.
>> The raw one will start slight rotating again because
stop didnt stop the movement of raw material inside totally

13

Tuesday, September 10th 2019, 2:37pm

4. carbon monoxide (CO) and hydrogen (H2)


correct

14

Tuesday, September 10th 2019, 3:10pm

What number describes how a fluid flows and is used to determine whether a flow is turbulent or laminar?


Nobody answered in time. The correct answer was the Reynolds number.

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15

Tuesday, September 10th 2019, 3:52pm

Which one of the following is wrong:

1. i=v/r
2. v=i*r
3. r=v/i
4. i=v*r
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16

Tuesday, September 10th 2019, 4:57pm

Which one of the following does NOT increase chances of CVD?

1. Increase in mean blood pressure
2.. Increase of NO-availalbilty
3. Decrease of sheer stress
4. Increase in Oxidative stress


CVD:Cardio Vascular DIsease

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17

Tuesday, September 10th 2019, 5:06pm

The answer is Increase of NO-availability

I think
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18

Tuesday, September 10th 2019, 5:08pm

Which one of the following is wrong:

1. i=v/r
2. v=i*r
3. r=v/i
4. i=v*r
btw nobody answered, the answer was 4: i=v*r because the formula is V (voltage)= I (Current) x R (Resistance)

it was a question regarding Ohm's Law.
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19

Tuesday, September 10th 2019, 5:46pm

If you place a thumbtack very carefully on the surface of the water, it floats due to the surface tension of the water.
In a plate is clean water, on which several thumbtacks swim individually, The small fleet will be left alone for about half an hour. What can be observed after that?

a) They still float individually on the water.
b) They have all swum to the edge of the plate.
c) They have merged into a composite and no longer floats around individually.

20

Tuesday, September 10th 2019, 6:06pm

correct!