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21

Tuesday, September 10th 2019, 6:17pm

correct answwr wouldnhave been c) they swim together

(water holds single ones with tension, but that tension creates small "wholes" in the water
so they comemall together step by step)

22

Tuesday, September 10th 2019, 7:09pm

Question:

What are the differance between an engineering stress-strain curve and a true stress-strain curve?

23

Tuesday, September 10th 2019, 7:50pm

Correct answer would have been:
True stress/strain curves takes the deformation of a material into account, where the engineering relates to the initial shape of the object.

24

Tuesday, September 10th 2019, 8:37pm

What is the difference between elastic collision and inelastic collision?

1. Total velocity is preserved in elastic collision, but not in inelastic collision.
2. Total momentum is preserved in elastic collision, but not in inelastic collision.
3. Total kinetic energy is preserved in elastic collision, but not in inelastic collision.
4. Total momentum is preserved in inelastic collision, but not in elastic collision.

25

Tuesday, September 10th 2019, 8:42pm

What is the difference between elastic collision and inelastic collision?

1. Total velocity is preserved in elastic collision, but not in inelastic collision.
2. Total momentum is preserved in elastic collision, but not in inelastic collision.
3. Total kinetic energy is preserved in elastic collision, but not in inelastic collision.
4. Total momentum is preserved in inelastic collision, but not in elastic collision.
3. Kinetic energy is preserved.
At last we have the mighty Chewbacca.

26

Tuesday, September 10th 2019, 9:08pm

What is the difference between elastic collision and inelastic collision?

1. Total velocity is preserved in elastic collision, but not in inelastic collision.
2. Total momentum is preserved in elastic collision, but not in inelastic collision.
3. Total kinetic energy is preserved in elastic collision, but not in inelastic collision.
4. Total momentum is preserved in inelastic collision, but not in elastic collision.
3. Kinetic energy is preserved.
That is correct!

27

Tuesday, September 10th 2019, 9:13pm

How does a fish regulate its depth?

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28

Tuesday, September 10th 2019, 9:33pm

How does a fish regulate its depth?
It looks down and says "damn son that's deep lemme just go a bit higher up"

seriously though, humans y'all better start answering the questions, from this very moment on, not having fun is forbidden. If you come here and just go away, expect me to pay you a visit at Friday the 13th. With my Jason Voorhees ask. And my machete.
It's better to be silent and be thought a fool than to speak and remove all doubt. What's even better is to weaponize your words to destroy anyone who dares challenge you.

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29

Tuesday, September 10th 2019, 9:34pm

mask. My Jason Voorhees mask.
It's better to be silent and be thought a fool than to speak and remove all doubt. What's even better is to weaponize your words to destroy anyone who dares challenge you.

30

Tuesday, September 10th 2019, 9:43pm

How does a fish regulate its depth?
It looks down and says "damn son that's deep lemme just go a bit higher up"

seriously though, humans y'all better start answering the questions, from this very moment on, not having fun is forbidden. If you come here and just go away, expect me to pay you a visit at Friday the 13th. With my Jason Voorhees ask. And my machete.



Also dont know where humans are, would prefer to share knowledge / learn new stuff and just
have fun instead of doing many points due to no one answering... :hi:

Well - but i think physics is really hard, especially for the non-mothertongue-english players

31

Tuesday, September 10th 2019, 9:44pm

Didnt receive answer - Correct answer would have been:

The fish changes the volume of its swim bladder.
A larger volume displaces more water, causing a greater buoyancy.

Submarines kind of copied that system by the way.

(Nerds Physical Part is formula "Fa = P v G")

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32

Tuesday, September 10th 2019, 9:54pm

Which one of the following peoples' name(s) aren't used in physics as a unit of measurement?

1. Isaac Newton
2. Pierre Curie
3. Gottfried Leibniz
4. Albert Einstein
It's better to be silent and be thought a fool than to speak and remove all doubt. What's even better is to weaponize your words to destroy anyone who dares challenge you.

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33

Tuesday, September 10th 2019, 9:56pm

Please note: There is only 1 answer, therefore the question is not in "aren't" form, consider it as "isn't".
It's better to be silent and be thought a fool than to speak and remove all doubt. What's even better is to weaponize your words to destroy anyone who dares challenge you.

34

Tuesday, September 10th 2019, 10:38pm

How long does a lever with a 50 ton dumbell at the end need to be, to counter the rotational force of 100 kNm

35

Tuesday, September 10th 2019, 11:10pm

When you enter an unlighted room, you do not see anything at first.
After a few minutes, your eyes have "adjusted to the dark".
What is meant by this phrase/how does that work?

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36

Tuesday, September 10th 2019, 11:36pm

Which one of the following peoples' name(s) aren't used in physics as a unit of measurement?

1. Isaac Newton
2. Pierre Curie
3. Gottfried Leibniz
4. Albert Einstein
The answer was Leibniz. He's a mathmatician, therefore his name wasn't used in anything that's related to physics. Newton is used to measure Force, Curie is used to measure radioactivity and Einstein unit is defined as one mole of photons.
It's better to be silent and be thought a fool than to speak and remove all doubt. What's even better is to weaponize your words to destroy anyone who dares challenge you.

37

Tuesday, September 10th 2019, 11:57pm

When you enter an unlighted room, you do not see anything at first.
After a few minutes, your eyes have "adjusted to the dark".
What is meant by this phrase/how does that work?


No Answer received :-(


Corect answer was:
through the so-called pupil reflex. This changes the size of the pupil, depending on how much light is available. It gets smaller when a lot of light hits the eye and expands as it gets darker

38

Wednesday, September 11th 2019, 12:33am

there are 2 large steel objects in space one can not move at all the other is going in a straight path it canot slow down,stop,or change paths.so wat happens when they hit each other?
404 not found

39

Wednesday, September 11th 2019, 1:14am

there are 2 large steel objects in space one can not move at all the other is going in a straight path it canot slow down,stop,or change paths.so wat happens when they hit each other?
they pass through each other

40

Wednesday, September 11th 2019, 1:16am

there are 2 large steel objects in space one can not move at all the other is going in a straight path it canot slow down,stop,or change paths.so wat happens when they hit each other?
they pass through each other


I'm so sorry.... you're late of one minute....

when they collide, they will either merge and move in the direction that the originally moving object was moving but at a slower speed, or they will bounce off each other, and both will move, though in different directions and with different velocities.
404 not found