Two more physics things....
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An iceberg melts on a lake. Does the water go up, down or stay the same? The energy of a moving object goes up squared to its speed (half MV squared). So, travelling at 80mph you have 4 times the energy than at 40mph. With this in mind, would you rather be on a head-on collision with another car when both doing 40, or plough into a stationary car at 80mph? Edit These are well debated things in the pub and as such I do not have definitive answers, although I have my own beliefs.
Regards, Rob Philpott.
If it's a more or less natural iceberg and a freshwater lake, then the level should remain the same as an iceberg is more or less fresh water (I believe, I haven't licked one recently) so plain old Archimedes has the math
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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I'm sure there's a boring definition out there - but isn't the dead sea well, a sea not a lake?
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
No, it is an endorheic lake. It is not linked to the oceans and water is only lost through evaporation. (Aral Sea and Caspian Sea are both lakes too).
--------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]
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No, it is an endorheic lake. It is not linked to the oceans and water is only lost through evaporation. (Aral Sea and Caspian Sea are both lakes too).
--------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]
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The level stays the same: When ice is submerged in water, being of lower density than the water it displaces the upthrust created on the ice by water is equal to the weight of the displaced water. When the ice melts its volume decreases (as it's density increases) but its weight remains the same and remains equal to the weight of displaced water when the ice was frozen. Head on: it's my inertia that will affect the damage to me, not the inertia of the other vehicle.
The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)
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No, it is an endorheic lake. It is not linked to the oceans and water is only lost through evaporation. (Aral Sea and Caspian Sea are both lakes too).
--------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]
According to the fount of all buman knowledge A sea is a large body of saline water that may be connected with an ocean or may be a large saline lake that, like the Caspian Sea, lacks a natural outlet. Sometimes the terms sea and ocean are used synonymously.[1]
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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According to the fount of all buman knowledge A sea is a large body of saline water that may be connected with an ocean or may be a large saline lake that, like the Caspian Sea, lacks a natural outlet. Sometimes the terms sea and ocean are used synonymously.[1]
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
The same standard repository of all knowledge and wisdom defines the Dead Sea as "...the deepest hypersaline lake in the world" Sea Hear[^]
--------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]
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The same standard repository of all knowledge and wisdom defines the Dead Sea as "...the deepest hypersaline lake in the world" Sea Hear[^]
--------------------------------- I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^]
Just goes to show that you can't believe everything you read on the interwebs
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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Just goes to show that you can't believe everything you read on the interwebs
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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Hmmm. Not sure of the veracity of that instruction!
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
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No that's Southend on Sea. I'm assuming you mean culturally :-D
"The secret of happiness is freedom, and the secret of freedom, courage." Thucydides (B.C. 460-400)
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No that's Southend on Sea. I'm assuming you mean culturally :-D
"The secret of happiness is freedom, and the secret of freedom, courage." Thucydides (B.C. 460-400)
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I have indeed completed a pilgramage to Jaywick, even went for a swim. I can't confirm or deny the degradation of the local culture, we didn't find any.
"The secret of happiness is freedom, and the secret of freedom, courage." Thucydides (B.C. 460-400)
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Just goes to show that you can't believe everything you read on the interwebs
MVVM# - See how I did MVVM my way ___________________________________________ Man, you're a god. - walterhevedeich 26/05/2011 .\\axxx (That's an 'M')
_Maxxx_ wrote:
Just goes to show that you can't believe everything you read on the interwebs
I'm sorry Max, you'll have to go back to school and improve your comprehension. If you look at Dave's post and specifically at his link, you will see he listens to everything on the Interwebs.
Michael Martin Australia "I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible." - Mr.Prakash One Fine Saturday. 24/04/2004
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An iceberg melts on a lake. Does the water go up, down or stay the same? The energy of a moving object goes up squared to its speed (half MV squared). So, travelling at 80mph you have 4 times the energy than at 40mph. With this in mind, would you rather be on a head-on collision with another car when both doing 40, or plough into a stationary car at 80mph? Edit These are well debated things in the pub and as such I do not have definitive answers, although I have my own beliefs.
Regards, Rob Philpott.
http://en.wikipedia.org/wiki/Ice[^] It depends but assuming atospheric pressure:
Quote:
An unusual property of ice frozen at atmospheric pressure is that the solid is approximately 8.3% less dense than liquid water. The density of ice is 0.9167 g/cm3 at 0 °C,[2] whereas water has a density of 0.9998 g/cm³ at the same temperature. Liquid water is densest, essentially 1.00 g/cm³, at 4 °C and becomes less dense as the water molecules begin to form the hexagonal crystals[3] of ice as the freezing point is reached. This is due to hydrogen bonding dominating the intermolecular forces, which results in a packing of molecules less compact in the solid. Density of ice increases slightly with decreasing temperature and has a value of 0.9340 g/cm³ at −180 °C (93 K).[4] The effect of expansion during freezing can be dramatic, and ice expansion is a basic cause of freeze-thaw weathering of rock in nature. It is also a common cause of the flooding of houses when water pipes burst due to the pressure of expanding water when it freezes.
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An iceberg melts on a lake. Does the water go up, down or stay the same? The energy of a moving object goes up squared to its speed (half MV squared). So, travelling at 80mph you have 4 times the energy than at 40mph. With this in mind, would you rather be on a head-on collision with another car when both doing 40, or plough into a stationary car at 80mph? Edit These are well debated things in the pub and as such I do not have definitive answers, although I have my own beliefs.
Regards, Rob Philpott.
Rob Philpott wrote:
An iceberg melts on a lake. Does the water go up, down or stay the same?
Depends on lots of things, like the temperature of the water, and how much there is of it -- warm water is bigger than cold water, and the change of state from ice to water will absorb some of the water's heat, making it smaller. The starting temperature and final temperature are therefore the biggest considerations Ice is also bigger than water, but an iceberg is partially above the water, so the final temperature is also a major factor in whether the bit above water makes the overall water volume greater.
Rob Philpott wrote:
The energy of a moving object goes up squared to its speed (half MV squared). So, travelling at 80mph you have 4 times the energy than at 40mph. With this in mind, would you rather be on a head-on collision with another car when both doing 40, or plough into a stationary car at 80mph?
A stationary wall doesn't have any vectors, which could make it better or worse (depending on the vectors of the moving car), but it also doesn't have anything that will absorb force by shooting it out as lots of different vectors (i.e. the front of a car spreads sideways on impact, which means it's sending some of the force of impact out sideways). In most cases, I would imagine that hitting another car would be preferable, but it all depends on the vectors of the cars, and their construction -- i.e. which bits of sharp metal will be pushed push in which directions (if one chops your head off, I'd call that a bad result).
I wanna be a eunuchs developer! Pass me a bread knife!
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An iceberg melts on a lake. Does the water go up, down or stay the same? The energy of a moving object goes up squared to its speed (half MV squared). So, travelling at 80mph you have 4 times the energy than at 40mph. With this in mind, would you rather be on a head-on collision with another car when both doing 40, or plough into a stationary car at 80mph? Edit These are well debated things in the pub and as such I do not have definitive answers, although I have my own beliefs.
Regards, Rob Philpott.
I think Mythbusters did both of those; ask them.
