Conversion of protein is a simple chemical process, certainly not restricted to humans.

just thinking.. is it possible to convert protein back into its original untangled form? using chemical process.

Cannot. There are certain configurations in protein, which is made from many processes. And these are biological processes in a cell, very-very difficult to replicate them using chemical processes.

Protein is a source of energy. If you add it into fire, you'll cause the fire to keep burning.

here's another one !

Imagine you're in space (no gravity) , and threw 2 food cans, 1 full, the other empty... which would travel furthest ?


I'm just plucking questions I got from my interview years ago, so I don't know what the answers are either

No,as pressure is not a factor in solidification of water.It solidify based on the average energy of each molecule.

The water will still solidify at 0.

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Added on June 22, 2009, 1:41 pmI think the full can of food would go further,as it will have higher momentum.

Momentum = Mass x Velocity

Mass up,momentum up.

Just my 2 cents.

This post has been edited by Cheesenium: Jun 22 2009, 01:41 PM

There's alwaiz a catch! Vacuum? Mass doesn't comes into the equation, right?

From my understanding,relativistic quantum field theory makes a very clear distinction between what I would intuitively understand to be an ABSOLUTE VOID and what we experience as the VACUUM of space. Therefore, mass has no effect on the velocity an object is travelling via vacuum condition.

I'm skeptical too since yu brought the matter up for discussion. I need enlightenment too.

Regards, Joey

Weight doesnt come into the equation,not mass,as mass is a measure of matter in a body and it's not affected by gravity.We can have a 1 unit mass object at earth.The same object would still be 1 unit mass in Mars.

I think your first sentence is sufficiently self explanatory. Thank yu.

Since we are on the topic of 2 different cans (one is empty and another one is full) traveling through vacuum. The question is Momentum = Mass x Velocity applicable in Vacuum/Absolute Void condition? In layman's term: WEIGHTAGE of a certain object (the two cans) affects the travel speed, in a sense, right?

Regards, Joey

p.s: "Cheesenium", thanks for the enlightenment. I knew the difference between mass and weight but it didn't came to me as I addressed the reply. MUAHAHAHA~~~

Momentum should apply i think,just that,both cans will never stop,if it's in a complete vacuum.

vacuum = no friction
therefore, i think the correct answer is both will travel the same distance (ie: infinity unless it hits something) however it will take more energy to throw the full can instead of the empty can (F=ma) at the same speed as the empty one.

hi,some question here.
is that possible "time" can be stopped or reversed?

read stephen hawking's books. he has some weird theory regarding that. and what you refer to as "time" is really not "time" but an illusion of time

Theoretically........if I'm vibrating at Planck length near the speed of light. I'm near immortal right?

This post has been edited by slacker: Jun 23 2009, 12:59 AM

Yeah, time does stop, but your cellular activities are not. So you will die somehow, someday.

if you dug a hole straight down - from one end of the earth to the other end, would you be able to fall from this hole all the way to the other side?

You probably be dead digging such a deep hole.

What i think is,you'll probably on a harmonic motion between both holes.

You'll probably get stuck in the middle of the earth. You will certainly not reach the other hole. As you fall down you will loose momentum due to air resistance making it impossible to reach the original distance from the centre of the planet that you started from. If you see people bungee jumping, they can never reach the same height that they leap from. Instead of a bungee rope which pulls you back up, you have gravity which pull you toward the centre of the earth.

You would melt in the middle.

But if some one figured out how to overcome this small mishap, you still woudn't be able to "fall" to the otherside due to the gravitational pull of the Earth. Nobody can fall up can they ?

Actually you can fall up in this particular scenario as the person will still have momentum from falling into the hole. You will continue to "fall" pass the centre of the earth because of this momentum until a certain height before you truly begin to fall back to the centre of the earth. Depending on how much energy you loose from air friction, it could take a few cycles of this before you stop at the centre.

okay, i deem this answer logical n precise~ btw, if there is tunnel connecting 2 ends, passing the earth center..how will the gravitational force be like that we experiencing? because i remember the G is derived from the mass of 2 objects and the radius of the objects right? ...and, upon the "falling" to the earth center..the atmospheric pressure at certain depth would have crushed us right?

the 1st question of the latent energy i adopt the saying the m.p. will be lowered..if pressure down, m.p. still remains 0 degree...then when it comes to a pressure level where b.p. = 0 and m.p still remains 0...the water (*sorry, should be ice) will sublime at 0 degree? hmm...mayb i should brush up my elementary chemistry

the 2 cans question...i reckon the 2 cans require different initial forces to put them into same speed...since F=ma...

for the light speed question...if one's travelling faster than light...where does the light reflecting on the mirror come from? because the direction you running is towards another light source so literally bump into it? lol..this makes me want to ask the behaviour of light..as a photon and wave...does it travel at certain direction? or scattered? will the travelling speed be reduced gradually due to friction and eventually stop and how does the speed of light measured?

This post has been edited by Eved9: Jun 24 2009, 09:22 PM