/biz/ - Business & Finance

I know the answer but im not telling

>>16315692
1kg is this a joke

>>16315692
.5kg

1.5kg because having flies inside would compress the air and make it heavier

>>16315709
Wrong

>>16315692
it depends actually
if the flies and the jar were separately measured and the jar is closed, then the scale will read 1.5

>>16315692
It would weigh nothing because it is a shitty microsoft paint picture on the internet.
How much does 241kb weigh?

>>16315720
>>16315710
>>16315715
>>16315727
keep ejaculating into napkins, it's what is best for humanity

1kg

If the flies are hovering, they are pushing down on the air, that air is pushing down on the jar, which pushes down on the scale. So, 1.5kg, right?

>>16315751
If the jar is sealed, yes.

>>16315692
>What much
well it looks like we found a thing OP is not good at

>>16315692
If the flys are flying then 1kg.

>>16315751
>>16315789
The air pressure from the downward force of the flies wings equalizes in the sealed jar and the air pressure on the lid (upward) is equivalent to the pressure on the bottom of the jar (downward). So the jar weighs 1kg. Source: physics bachelor degree

zero.
The scale is tared to weigh the flies but the flies are flying so exerting no downward pressure. Zero. Also scales cant read.

If the lid is airtight, 1.5 kg.
If not, 1 kg

>>16315973
Which university do you attend? I'm gonna get your bachelor's degree revoked
>t. physics MSc

>>16315692
Are the flies dead?

>>16315973
lmao

>>16315997
>Are the flies dead?
yes anon, that's why they are flying

>how to keep a bunch of retards busy for a few hours

/thread

>>16315692
Mythbusters actually has an episode on this.
They use birds in a truck (and also later try RC helicopters when the birds were giving them to much trouble)

kwc.org/mythbusters/2007/04/episode_77_birds_in_a_truck_bi.html

>>16316018
Could be just to illustrate. Not an unreasonable question imo.

>>16315692
simple. 0.5 killergrams because the jar is empty apart from the flys and they the only thing that has any wait on the scale.

>>16315692
how can 5 flies weight 0.5 kg? 100 gramm each fly? wtf

>>16316056
Schwifty/schwifty

>>16316086
their balls are filled with nofap cum

>>16316056
2/3

Jar = 1kg
Flies = 0.5kg
Air = unspecified
no air, flies can't fly, they sit on the floor and add to the weight normally
so
1.5kg

>>16316056
1/2
once you've found 1 gold ball the 2 silver box becomes completely irrelevant.

>>16315692
so the earth is flat?

Mind Blown

>>16315692
Jar is 1kg. Flies weight is irrelevant as they are flying. With that said, I say .5kg. Why? Because those fucking scales arent accurate. Looks like the beta v2 model.

>>16315692
If all the flies fly = 1kg
If all the flies are landed = 1.5kg
Otherwise in between.

R U FUCKING BORED WHO GIVES A FUCK WHAT THAT WEIGHS. RETARDS.

>>16316739
Finally someone non retarded. Makes you think about the kind of people that browser this chan.

>>16316056
As for this, the answer is 2/3.

>these are the people giving you financial advice

>>16315692

The jar only has air in it so it weighs nothing

>>16315692
It would be between 1kg and 1.5kg because the flies aren't putting their entire weight on the scale but there's still some downward pressure from the wind beneath their wings, so answer is none of the above

>t. brainlet college dropout

You're all retarded
it's 1.5 kg.
It's a closed system
So even though the flies are flying the reactionary force will act upon scales.

Think of the air as not a fluid but a weightless solid and the flies wings resting on top of this solid. They will push on the solid which will in turn push on the scales.
It's no different with a fluid but it's harder for brainlets to comprehend.

>>16317221
Yeah but wouldn't it fluctuate due to the varying upward and downward pressures that the flies exert on the air in the jar?

Think about it!

>>16316056
50/50
>The box with the 2 silver balls are disqualified if you picked up a gold ball
>If you picked the gold/silver box then probability is 0%
>If you picked the gold/gold box then probability is 100%
Therefore it is literally 50/50 probability

>>16315692
Time is another factor in this equation, at the start the scale will measure 1kg as the flies are hyperactive and airborne but over time they will gradually land adding weight and eventually they will die if left in for long enough at which point the scales will read 1.5kg

The scale reads THE CHAINLINK WHITEPAPER and the scale IS GOING TO MAKE IT

There's some deep retardation in this thread.

For a fly to hover it must be exerting downward pressure equal to it's weight. In a closed system that pressure will be exerted on the jar making it heavier. 0.5KG of flies hovering equals an extra 0.5kg of weight, making the jar 1.5kg. Although that may fluctuate by a fractional amount depending on whether the fly is accelerating or not.

If that didn't happen it would basically violate numbers laws of physics and create anti-gravity technology, where you could hover a 5 ton helicopter instead a 1 ton sealed container and then you'd only require 1 ton of force to lift 6 tons.

>>16315692
The problem lies solely with "flies weighs [sic] 0.5 kg"

This renders the typical "okay let's visualize the problem" useless. A fucking 500 gram fly? A 500 gram fly couldn't fly whatsoever.

>>16317254
But there are 3 golden balls to begin with. Therefore it was 2/3 probability that you picked the box iwth 2 golden balls and 1/3 probability that you picked the one with the silver ball.

So its actually 2/3.

>>16315973
>physics batchelor degree

>>16315692
Did you zero the scale after putting the jar on it and before putting the flies inside?

>>16317450
>batchelor

>>16317287
Based

Fuck your gay ass flies

>>16317458
>jar weighs 1kg
unless explicitly stated, it means the weight of the jar is 1kg without anything in or on it

>>16317413
That's literally not what the question asks. It asks for the probability that your next pick will be a gold ball, not for the overall probability of picking two.

>>16317488
Checked and based

>>16317506
in vacuum or at sea level?

>>16315692
This is like monty hall problem, something that confirms 99% of people are complete retards.

Basic physics says the scale shows 1.5kg. If we round the numbers, the gravity is pulling the jar+fly closed system with 15N downward, and the scale counters that force and shows 1.5kg.
The rest of you retards are so easily confused by the fact that flies are flying that you forget the basic Newton's laws.

The jar is closed, so you can consider it a closed system. Since it is not accelerating, all the internal forces must cancel out. This way, even if the fly is flying, there will be an equal force but with opposing direction within the system, so the jar will always weight 1.5Kg

If you open the jar, this changes completely

>>16317544
How to experiment this thing in real life? I'm curious about whether flying adds to the weight or not.

>>16317544
why does it change if you open the jar? the the air in the jar float out the top?

>>16315973
>Source: physics bachelor degree
Yeah, and my dad owns Microsoft.

>>16317550
Indeed, someone made a YouTube Video with a drone inside a box. The scale will read 1.5kg and even if you open the jar it wont change (just negligible). He even let the drone fly above a plate (no side walls) and it was still the weight of the plate+drone.

1.5kg easy.

Jesus christ people are retarded.

its not about "downward pressure" or any bullishit like that. In a closed system the weight of the fly is now a part of the air in the jar. The air at the top of the jar doesnt weigh any less because "its floating" above all of the other air.

>>16317563
so the weight doesnt change if you open the jar?

>>16317567
the scale measures forces felt on it

the jar exerts a force on the scale because of gravity

the time average force of the flies in any direction is zero, because for any time spent flying any direction, they fly just as much the other way.

so just the weight of the jar

>>16317549
someone posted a mythbusters link in this thread

as far as those gold and silver balls go, you can easily write a javascript page where you can try this a 1000 times and see if you get 50% or 66% yourself. Of course the answer is 2/3.

>>16317586
youre not making sense, you just said a drone in a box will weight drone+box, so why not flies in a jar weight flies+jar?

>>16317586
>the time average force of the flies in any direction is zero
Not really, in order to stay in the air the force affecting flies is 5N more average up than the average force down. This affects the jar in reverse (5N push down).

>>16317563

Mythbusters also did this, as I recall they used an RC helicopter and doves.

>>16317674
Good job bros, we have the same mind. We are going to make it

>>16317696

Indeed, we are going to make it.

So assume the jar is filled with water instead of air. It is easier for a brain let to understand. If the jar is filled with water and something were floating in it, let's say an ice cube. You get a total weight of 1.5 kg with the ice cube in ther floating. Now take the ice cube out which we will say weighs .5kg. What would you expect the total with of the jar to be? Sorry I am just a brown pilled farmer who has to minimalize problems to understand them.

The oxygen is already priced in, so it's 1kg

>>16317715
I'd assume that if the jar was "filled" with void, the flies wouldn't have an effect on the scale

because the jar is closed, the jar and flies count as one singular object. so 1.5 kg

Scales don't show mass, they show weight, i.e., a force that is pushing them downward.

>>16315692
1kg
>>16316056
2/3

>>16317729
If the jar was filled with void how are the flies flying you literal overthinking retard.

>>16317763
So when a harrier jet takes off from the ground you believe there is no weight being distributed on the ground? How is a fly's physics different from a harrier jet or helicopter taking off?

>>16317515
Stop using the term literally... Sine you are unaware of which box you picked the first time the probability of picking the first box needs to be taken into consideration. its 2/3.

>>16316056
Statistics are dumb, effectively statisticians when faced with a boring as fuck field of science created a rule that tries to make frame of reference relevant.

This shit stops holding up when you program a computer to just calculate how many times each result occurs. A computer will say that

"Out of every time that it got a gold ball from the first box at random, 50% of the time afterwards it got an additional gold ball" and you can fuck right off.

>>16317817
>Sine you are unaware of which box you picked the first time
No, I'm not. The image says you pick a gold ball the first time, which narrows it down to two boxes. The probability that I then pick another gold ball is 50/50, because the next ball is either gold or silver.

flies dont weight 0.1 kg this is ridiculus

>>16315973
Ur wrong.
>myth busters 1 episode - free
Get rekt

>>16316309
>1/2
wrong. the odds of finding a gold ball the first time make it more likely that you picked the box with 2 gold balls in it. you're odds are 2/3 at pulling another gold ball.

>>16317900
right, because you picked a gold ball,it narrows it down to two boxes. but it's more likely that you picked a gold ball from the box that had two gold balls in it....don't you think? you are ignoring that part.

>>16315692
Flys don't weigh 5 kg wtf

>>16315692
is the jar sealed or open top?

Answer is not A, B or C. It is D - Not enough information.

>>16316056
You take out a gold ball so it's either the left or the middle box, the left one will definitely result in another gold ball and the other in a silver one. So .5. Nice problem anon

>>16318339

No. It's predetermined that you pick a gold ball, thus there is absolutely no probability involved. If you picked the ball 10 times, then yes. But for one predetermined case, not at all.

>>16318443
>>16318397
I understand logic is difficult for you so I'm going to break this down in a way that even a brainlet like yourself can understand. this way, you too can be based and mathpilled.

there are 3 gold balls in the picture. the question is if you pulled on gold ball, what are the odds that the other ball in the same box is also gold.
there are three possible scenarios:
1- you pulled the first gold ball in the picture. that other ball in that box is also gold.
2- you pulled the second gold ball in the picture. the other ball in that box is also gold.
3- you pulled the third gold ball in the picture. the other ball in that box is silver.

so out of the 3 possible scenarios, two to the three have a gold ball as the other in the box. your odds of pulling a second gold ball are 2/3.

you're welcome.

>>16315734
>electrons don't have mass
who's the retard now?

>>16318569
>I understand logic is difficult for you so I'm going to break this down in a way that even a brainlet like yourself can understand

It rather seems that you are the brainlet. It's because of how the question is formed that it becomes 50/50. Let me try and open up the question so that even a retard can understand it.

The question states that you pick a golden ball with 100% probability. This being the case it doesn't matter if your hand goes into the box with double golden balls or the one with gold/silver, because in any instance you're going to pick the golden one. Thus in this situation the gold/silver box acts just like another gold/gold would.

You're welcome.

>>16315692
>kilograms
>unit of weight
stay poor nubiz

>>16318637
dude. three gold balls....two boxes. you picked one gold ball. step through it. which ball did you choose? there are three scenarios. I really don't know how you can still be this retarded after the breakdown...>>16318569

the odds are not even. please don't have children. the world does not need any more morons.

did biz not study discrete math?

>>16318665

The question states that you 100% pick a gold ball. Thus there is 0% chance you pick the silver ball when your hand goes into the gold/silver box. This essentially means that the gold/silver box acts exactly as the gold/gold would. I can't believe someone as retarded as you is able to breathe.

>>16318693
now you're just trolling.
if the question said you picked the ball on the left side of the box and it was gold, you'd be correct. but it doesn't. you picked one of the two balls in the box, could be the one on the left.....could be the one on the right (if you're pulling from the first box)

>>16318716

But you were unable to pick a silver ball due to the cosmic law of the question, which states that you picked a golden ball. Thus it means that during the action you took you had 100% chance of picking a golden ball and 0% chance of picking the silver ball, because the silver ball would invalidate the question.

There are only two boxes and no matter which box you picked you found a golden ball. It doesn't matter which ball it actually is. The silver ball does not exist during the first pick.

>>16318766
wrong. there are 3 gold balls. this you can agree to, correct? so step through the possibilities here.
pretend you picked the first ball. what color is the other ball in the box?
pretend you picked the second ball. what color is the other ball in the box?
pretend you picked the third ball. what color is the other ball in the box?

you are getting hung up on there being two boxes and are mistakenly assuming the odds of ending up in either of the two boxes is equal....it's not. it is more likely that when picking at random, you picked out a gold ball from the box with two gold balls in it. that weights the odds that the second ball you pull from the same box is also gold.
don't ever post on my board again.

>>16317815
>commercial airliner flies above house at 30,000 feet
>crushed to death under the weight it exerts on me
this is how you sound right now

>>16315710
>>16315709
>>16315703

learn something about flies today
https://youtu.be/e_44G-kE8lE?t=180

>>16318796

You're mistaken. It's not about picking balls, it's about picking boxes. There are only 3 boxes and according to the question, in two cases you're going to pick a golden ball. It doesn't matter which ball you pick from the box because you're going to 100% pick a gold one.

I'll try to explain it this way:

>You put your hand in gold/gold box -> You'll pick a golden ball with 100% certainty
>You put your hand in gold/silver box -> You'll pick a golden ball with 100% certainty.

>>16318838
Just stop. You're embarrassing your whole country Rajneesh.

>>16318857

>Gets his arguments absolutely devastated
>Cries about muh pajeet

This is getting hilarious. Thanks for admitting you're wrong, kid.

>>16315692
Somewhere between 1 and 1.5 kg, because the flies are supported by flying. This pushes the in the jar downwards but due to the viscosity of the air, some of this forced is imparted radially on the outer wall of the glass and some of it downward on the bottom of the jar. If a recirculating current forms it will even impart an upward force on the lid, although this will be smaller than the downward force.

>>16317385
>he doesn't know about birds

>>16318873
you are an expert troll, I'll give you that. changing the basis of the question to fit your logic doesn't phase me though. it's absolutely retarded.

>>16318838
>You put your hand in gold/silver box -> You'll pick a golden ball with 100% certainty.

>hurr durr. a coin is flipped and it lands on heads. that must mean the odds of it landing on heads is 100%

>>16315692
0.5kg because flies will try to fly and 1kg - 0.5kg = 0.5kg Flies will try to fly away and because they are strong and can't cope that they are wagie cagie hence they will try to lift the jar.

>>16318942

No. You're trying to change the basis of the question. You're misunderstanding the question and that's why you make yourself look like an idiot. The question clearly states that you pick a golden ball. This in itself invalidates any instances where you pick the silver ball "at random". This is your blind spot that you didn't notice.

If u pick gold ball
Den it can only be box 1 or 2
If u picked gold from box one there only gold ball left in there
If u picked gold from box 2 there only silver left
U can’t pick box 3 because it states there only silver balls in dere
It not asking for prob of picking da box containing gold
It state da box already by picking gold 100% on first trial

ans is 1/2 checkem

>>16318967

Please tell me how can you pick a silver ball when you put your hand inside the gold/silver box if the question states that you picked a golden ball. Go ahead, I'm waiting.

>>16318967

Look, even the nigger in >>16319081 understood the question.

Jar question is 1
Kg
Not 1.5
Scale measures weight
Weight is force of acceleration on mass

>>16319089
reread the question.
>you pick a box at random. you put your hand in and take out a ball from that box at random.
so you pick a box at random. 2/3 have a gold ball in them. you put your hand in box and pull out a ball at random. the odds in the first box is 100% a gold ball. the odds in the second is 50%.
the outcome is that it's a gold ball. that does not mean that the odds of pulling the ball were the same in those two boxes. how do you not understand that the outcome does not define the probability?

>>16319089
do you even understand what is meant by probability? when it asks, what is the probability of the second ball being gold?

have another one:
there are three closed doors. behind one of them is a new car. you pick one door. before it's opened, the narrator says he will remove one of the doors that doesn't have the car behind it. he then asks if you'd like to keep the door you're chosen, or switch to the other door.
which of the two doors is more likely to have the car behind it? the one you chose first? or the one you're being offered second?

odd of the first one are 1/3, odds of the second are 1/2.

you aren't as smart as you think you are.

>>16319187

>you pick a box at random. you put your hand in and take out a ball from that box at random. It's a gold ball

It looks like you didn't read the question. It clearly states that you picked a gold ball, thus the question itself states that you'll pick a gold ball with 100% certainty no matter if you choose the gold/gold or gold/silver box.

>the odds in the first box is 100% a gold ball. the odds in the second is 50%

No, according to the question (it's a gold ball) both boxes have 100% chance of picking the gold ball because you're unable to pick the silver ball even if you put your hand in the silver/gold box. You see, it only matters if you pick a box that contains a gold ball (because you're going to pick the golden one with 100% certainty). It doesn't matter how many gold balls the box has.

>>16319229
no retard, the outcome after picking randomly was that you picked a gold ball. the outcome doesn't define the probability.

>>16319197

>do you even understand what is meant by probability?

Oh I understand it perfectly well. It rather seems you don't.

>>16319228

This question is not equal to the one we were talking about. You're trying to move goalposts.