Recent content by louise82

So it would still sound the same because it would still resonant at 1000Hz--it would just have a different wavelength?

Would a tuning fork in an atmosphere of Helium sound different than in air? I know the speed of sound is much faster and the fork (100Hz) would have a different wavelength but how would that affect sound?

what's throwing me off is the spring... the carts are initially at rest together, then the spring on cart 1 is released.

kinetic energy and momentum

If two carts collide and cart 1 has a spring on it, how can I figure out the final velocity of the first cart?

The the purpose of the lab was to dehydrate 2-methyl-2-butanol with H2SO4 and heat. The reaction was taking place as the distillation was occurring. From what the grad student in the lab told me, I was to watch the temp and stop the distillation when there was a sharp rise. It stayed at a...

I just finished a lab where I distilled a mixture of 2-methyl-2-butene and 2-methyl-1-butene in a dilute solution of sulfuric acid. The boiling points of the compounds respectively are 38.57C and 31.6C. The bp range ended up being a constant 32C. How is this possible? Shouldn't it be...

Ok, feel dumb now. But since I'm exposed I may as well ask all my other dumb questions. Thanks for the help. :)

Ok, I can find v1', but I'm confused on which equation to plug in where to get v2'.

[SOLVED] Deriving the head-on collision equation in terms of v2' and v1' I think I'm having an algebra issue here, but how is the momentum equation (where v2=0): m1(v1-v1')=m2v2' combined with v1+v1'=v2' to give: v2' = v1 [ 2m1/(m1+m2)] and v1' = v1 [(m1-m2)/(m1+m2)] I'm...

Because my physics prof didn't offer any ideas other than to discuss the philosophical evolution of classical physics--which I was told is too broad and to focus on something more specific in order for the proposal to be aproved. My organic prof does research with drug design and had a...

Hey, here's the deal: I want to do an honors project (not a senior thesis or anything like that--just a project that will give me honors credit for my physics I w/ calc class)... One of my chem professors suggested that I review the method and background of molecular dynamics as applied to...

Heat absorbed, enthalpy change should be positive. Heat released, enthalpy change should be negative? What is giving me problems, is that when I work the problem, (as done in the previous post), it comes out to be -27kJ/mol. But, when I looked up the enthalpy in my textbook, it is listed as...

Yeah, it is endothermic. I realized I was solving the problem for the solution instead of the the reaction. So, it ended up being 27kJ/mol. Thanks so much for the help though. I have only seen one problem worked in class. Just for clarification: since the enthalpy change for the...

Thanks, that helped a lot!