Can a monkey outrun a bullet and still save her litter?

[Doctoress SD]

3)Three switches outside a windowless room are connected to three light bulbs inside the room. How can you determine which switch is connected to which bulb if you may enter the room only once?

Switch one on for 2 minutes, then the next for two then the next for two. switching the previous one off before switching the next one on then go in the room and touch the bulbs, feeling the difference in temperature as the cool, the hottest is the last switch you switched off and the coolest is the first switch you switched off.

1 on (2 mins) 1 off, 2 on (2mins) 2 off, 3 on (2 mins) 3 off, go in and feel.

But then you would need to know that there are bulbs in the room in the first place.

 

[K.J.Healey]

None, he is going to die in them all. Unless he could take some water in the first room, bribe the assasins in the second and tame the lion in the third, or just find Danial from the bible and stay away from the second room.

Lions that haven't eaten in 3 years tend to be a little too hungry to tame.

 

[Doctoress SD]

Yeah right, maybe that is in America. If 3 lions were in a room then that might suggest they haven't been fed in a while and they will instinctually kill when there are no other animals around, also the room will be confined and they will do it for the sake of doing it, like tame cats play with mice and kill them.

 

[DaveC426913]

Lions that haven't eaten in 3 years tend to be a little too hungry to tame.

Lions that haven't eaten in 3 years tend to be a little too dead to be hungry.

 

[Doctoress SD]

Ugh, I so read that wrong. Excuse my misinterpretation.

 

[K.J.Healey]

Lions that haven't eaten in 3 years tend to be a little too dead to be hungry.

I was being subtle :)

 

[ehj]

A man is told that he is to be sentenced. The judge asks if he has anything to say and the man says, if I can plunge my hands into boiling water and keep them there for a few minutes would this not show that the Gods favoured me, and that I was innocent?

Interested by the mans show of piety the judge acceeds. How does the man plunge his hands into boiling water for a few minutes without sustaining injury? Assume that he has no protective measures on his hands, such as gloves,any sort of barrier.

Well.. it's funny that this hasn't been suggested as a solution, but I guess it is a physics site after all :P
If I were to make no assumptions like the rest of you had to, the answer would be that he is in fact favoured by the Gods :) that's how he does it :P

 

[shamrock5585]

i would say one way to do it... which isn't very feasible... is to somehow reduce the pressure around the water drastically so that the water would boil at room temperature.. then he could stick his hands into whatever chamber reduced the pressure and into the now boiling, but room temperature water!

 

[ehj]

i would say one way to do it... which isn't very feasible... is to somehow reduce the pressure around the water drastically so that the water would boil at room temperature.. then he could stick his hands into whatever chamber reduced the pressure and into the now boiling, but room temperature water!

His hands would prolly boil too then. They consist of a large amount of water.

 

[shamrock5585]

i have never tried this so i wouldn't know for sure but i would think they would just dry out because the water would evaporate from your hands... the temperature would be the same as room temperature but the pressure would be reduced so that the water at that temperature turns to a gas but it is not "hot" when it is boiling, so your hands would not be hurt... just dry

 

[MJL21193]

Hi. I'm new here, so go easy.

My question:
Longitudinal sound waves are called compression waves. When sound goes through water, does the sound wave compress the water (make it more dense) or does it just pressurize it?

Thanks.

 

[DaveC426913]

His hands would prolly boil too then. They consist of a large amount of water.

The water in our hands is contained within a membrane (skin, cells). This keeps pressure. Water only boils in vacuum because there is no vapour pressure.

You hands will dry out, but it will take a long time.

 

[DaveC426913]

Hi. I'm new here, so go easy.

My question:
Longitudinal sound waves are called compression waves. When sound goes through water, does the sound wave compress the water (make it more dense) or does it just pressurize it?

Thanks.

Both.

 

[MJL21193]

Both.

Thanks for the response.

Given the near incompressibility of water, I assumed that sound lacked sufficient energy to pack water molecules closer together, but would rather displace molecules (increase volume) to allow for the increased motion of the excited water molecules. Take water at 4*C under standard pressure - it is at it's maximum density. Sound will still travel through it though, at close to the same speed as water at a higher temp.
Am I getting it completely wrong, or is there some validity to what I'm thinking?

 

[DaveC426913]

Thanks for the response.

Given the near incompressibility of water, I assumed that sound lacked sufficient energy to pack water molecules closer together,

Other way round. Nigh-imcompressible materials are excellent sound-transmitters because their molecules are so tightly bound. Water is just one. Steel is nigh-incompressible (compared to air) and also transmits sounds very well.

 

[Herodotus]

For question 2, i would say door two. The question says he's a murderer, which could mean he's an assassin. Going into that room, he could be greeted with open arms.

 

[neu]

I have good question:

tentative Q: What is the only animal in the world that has 4 legs?

Here a leg is defined as a limb with knees. For example, cats, dogs etc have 2 knees and 2 elbows. The front "legs" on such animals are infact modified arms. Of course you can chose a leg to just be any limb you walk on, but it's perhaps more apt distinguish arms that have been modified for walking from legs.

Question restated: What is the only animal in the World with 4 knees?

 

[JDEEM]

an elephant?

 

[Jimmy Snyder]

Chang and Eng Bunker.
http://en.wikipedia.org/wiki/Chang_and_Eng_Bunker"

 

[redargon]

Chang and Eng Bunker.
http://en.wikipedia.org/wiki/Chang_and_Eng_Bunker"

hehe, my smile for the morning

I agree with the elephant, if we're talking animals not of the homo sapiens variety.

what about a giraffe, hippopotamus, rhinocerous...

 

[neu]

Yes, the elephant is the answer.

what about a giraffe, hippopotamus, rhinocerous...

They have two elbows and two knees. Actually I think horses, including giraffes, zebra etc, have the knees at the front and elbow type joints on their hind legs.

Mental

 

[DaveC426913]

Yes, the elephant is the answer.



They have two elbows and two knees. Actually I think horses, including giraffes, zebra etc, have the knees at the front and elbow type joints on their hind legs.

Mental

Actually, if you check out their anatomy, you will discover that it is not an elbow type joint at all, it is their ankle.

Cats, dogs and the like walk on their tip toes. Giraffe, zebra etc. walk on their toenails.

http://www.infovisual.info/02/img_en/070%20Skeleton%20of%20a%20dog.jpg"

For Elephants, you're not looking at a knee at all, you're looking at their wrist
http://www.elephantcountryweb.com/elephantskeleton.gif

 

[Jimmy Snyder]

None of this gets close to the answer to the question. If an elbow is a joint in the arm, and a knee is a joint in the leg, then when you say that the elephant is the only animal that has four knees, you are also saying that the elephant is the only animal that has four legs.

Here's a joke that sounds better than it reads: A horse has 6 legs, two legs in the rear and forelegs in the front.

 

[DaveC426913]

None of this gets close to the answer to the question. If an elbow is a joint in the arm, and a knee is a joint in the leg, then when you say that the elephant is the only animal that has four knees, you are also saying that the elephant is the only animal that has four legs.

He's getting at which way the joint bends. Knees point forward, elbows point backward.

What he's not realizing is that those aren't the animal equivalent of knees or elbows at all. They're wrists and ankles.

 

[Jimmy Snyder]

He's getting at which way the joint bends. Knees point forward, elbows point backward.

Is that the definition of knee and elbow? I thought a knee was the joint in the leg between the femur on one side and the tibia and fibula on the other. And the elbow, the joint between the humerus on the one side and the ulna and radius on the other. That's how it is on me and my kids.

What he's not realizing is that those aren't the animal equivalent of knees or elbows at all. They're wrists and ankles.

The picture you provided is not a photograph, it is an artist's rendering. If the image intends to show only the limbs on the left side of the animal, then it clearly shows the femur, tibia, and fibula on the hind leg and the knee at about the location you would expect it to be. And the humerus, ulna, and radius (or femur, tibia and fibula) on the forelimb again with the elbow (or knee) just where you would expect it to be. I have been looking for a clear photographic image of the forelimb on the net but have failed. Here is the best I have so far:
< link to possibly harmful site deleted > Surely, someone can find a better shot of the lower forelimbs, but I have given up.

 

[DaveC426913]

Is that the definition of knee and elbow? I thought a knee was the joint in the leg between the femur on one side and the tibia and fibula on the other. And the elbow, the joint between the humerus on the one side and the ulna and radius on the other. That's how it is on me and my kids.

Well, you make a good point which strikes at the heat of the OP's question. What is the differnce between a leg and an arm?

All four-legged mammals have two limbs attached to a pelvis and two limbs that attach to a collarbone. No four-legged animal has two pelvi. This seems to be the structural definition of arm versus leg. (The only other one I can think of is one that distinguishes between prone walkers and upright walkers, but that's again pretty loosey-goosey.)

The picture you provided is not a photograph, it is an artist's rendering.

Not really sure why that's relevant or necessary to point out, but...

I too had a lot of difficulty finding good elephant skeleton images.

If the image intends to show only the limbs on the left side of the animal, then it clearly shows the femur, tibia, and fibula on the hind leg and the knee at about the location you would expect it to be. And the humerus, ulna, and radius (or femur, tibia and fibula) on the forelimb again with the elbow (or knee) just where you would expect it to be.

In this sense you are correct. The forelimbs of all four-limbed animals are humerus, ulna and radius, which is pretty much the definition of an arm as distinct from a leg.

Thus, an elephant has two arms and two legs, like every other mammal.

 

[neu]

I'll come clean and confess I heard it on telly (on QI) and assumed it to be true. I've come to agree with dave that their elbow is positioned higher on the limb and it's their wrists which bend forward and give the apearance of a knee.

This makes a lot more sense as I thought it strange that the elephant would have evolved a unique limb structure.

I stand corrected

 

[Jimmy Snyder]

Not really sure why that's relevant or necessary to point out, but...

Sorry, I meant no criticism. I felt it necessary to point out because it was the only picture I could find that clearly showed the three bones in the forelimb. I would much rather have had a photograph to work with.

 

[Gokul43201]

I'll come clean and confess I heard it on telly (on QI) and assumed it to be true.

QI is loads of fun, but it's only about 70% accurate. You must double-check anything you see there.

 

[K.J.Healey]

Is that the definition of knee and elbow? I thought a knee was the joint in the leg between the femur on one side and the tibia and fibula on the other. And the elbow, the joint between the humerus on the one side and the ulna and radius on the other. That's how it is on me and my kids.

The picture you provided is not a photograph, it is an artist's rendering. If the image intends to show only the limbs on the left side of the animal, then it clearly shows the femur, tibia, and fibula on the hind leg and the knee at about the location you would expect it to be. And the humerus, ulna, and radius (or femur, tibia and fibula) on the forelimb again with the elbow (or knee) just where you would expect it to be. I have been looking for a clear photographic image of the forelimb on the net but have failed. Here is the best I have so far:
< link to possibly harmful site deleted > Surely, someone can find a better shot of the lower forelimbs, but I have given up.

I get this when I go to that site:

http://safebrowsing.clients.google....load/5F426B8E-37D7-4708-9395-0F99FFEC1F1E.jpg


is that a safe site? might want to check your adaware.