EPTOn October 20 2008 02:18 micronesia wrote:
SCC-Faust provide an explanation you emo-blogging self-deprecating son of a broodling.
SCC-Faust provide an explanation you emo-blogging self-deprecating son of a broodling.
Thinking Physics Question 6 - Page 2
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TimeShifter
Singapore235 Posts
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Mooga
United States575 Posts
On October 20 2008 10:15 micronesia wrote: I teach high school physics (gr 11-12). I do not give these as extra credit. Nice! I wish my teachers back in high school were awesome enough to play Starcraft. Unfortunately, they were all really lame :/ | ||
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Jonoman92
United States9105 Posts
I certainly couldn't've come up with the correct answer but after reading MasterOfChaos' and others' posts it seems like B is reasonable to me. When inside the iceberg the railroad spike causes additional displacement due to its weight/mass but once it sinks to the bottom it will cause less displacement since only it's volume will matter and not it's mass/weight. | ||
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Luddite
United States2315 Posts
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eshlow
United States5210 Posts
Answer is definitely E. You can treat each object the same according to Archimedes principle. Since each of lower or higher density objects are inside the icebergs respectively (ice, water, spike), this gets taken into account in how low each iceberg sits in the water. Thus, each iceberg will displace as much volume as proportional to its buoyancy. Therefore, no water level will change. Gene removed his answer so.. I am assuming micronesia doesn't care about this topic anymore though.  Most of you guys choosing B is kinda amusing namely because unfrozen water is more dense than ice (same as the spike). Thus, if you chose B you SHOULD also being saying that the water level would be lower for iceberg with water inside it too which is obviously not the case as you reasoned out. | ||
micronesia
United States24750 Posts
On October 21 2008 00:18 eshlow wrote: + Show Spoiler + Answer is definitely E. You can treat each object the same according to Archimedes principle. Since each of lower or higher density objects are inside the icebergs respectively (ice, water, spike), this gets taken into account in how low each iceberg sits in the water. Thus, each iceberg will displace as much volume as proportional to its buoyancy. Therefore, no water level will change. Gene removed his answer so.. I am assuming micronesia doesn't care about this topic anymore though. Most of you guys choosing B is kinda amusing namely because unfrozen water is more dense than ice (same as the spike). Thus, if you chose B you SHOULD also being saying that the water level would be lower for iceberg with water inside it too which is obviously not the case as you reasoned out. I was joking about Gene. This is still up for grabs. | ||
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TimeShifter
Singapore235 Posts
i failed..i feel sad..but i will try again:Di think micronesia u're really cool..too bad my school teachers don't play games..my physics teacher doesnt have any life at all..his laptop has hundreds of java applets, nothing else..not even a flash game, rather than a real computer game..lolXD | ||
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