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About RVJ

  • Birthday 10/06/1992

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  • College Major/Degree
    Biochemistry and Molecular Biology
  • Favorite Area of Science
  • Occupation
    Photography Instructor

RVJ's Achievements


Quark (2/13)



  1. Bringing life to an old topic: There is a website that allows you to fully visualize what it is you're asking. http://www.stanford.edu/~nitsche/cgi-bin/numbers.pl?googolplex If I were you, I wouldn't waste my time waiting for your computer to load all of those zeros. I'm sure it would be possible to write a code that renders numbers in real time if you used some sort of loop (rather than saving a googolplex worth of zeros).
  2. Just curious, what are some good topics in organic chemistry to write a 10 page research paper about? I have a technical communication class this semester, and I was planning on writing about fullerene and it's application in creating nanotubes. I figured it was a good topic that could relate to the real world in its application for creating synthetic materials. Among a few other ideas I had, I thought this was the best topic. What are some good topics to write a paper about?
  3. HNMR works in a very similar way to Carbon-13 NMR. It tells you how every hydrogen in the molecule is being affected by the other hydrogens in the molecule. For instance, HNMR tells you how many different types of hydrogens you have, and where they're located on the molecule. Take a benzene ring for example, There is only one peak, because there is only one kind of hydrogen on a benzene ring. You can use HNMR in combination with CNMR and IR, and perhaps UV -- if you have a conjugated compound. I find it most helpful to take every piece of individual information on it's own accord, and write down what each peak of every graph you have available could mean. Once you have done that, look at everything you have written down, and see what fits together.
  4. The other day I was filling out an online quiz our professor assigned for our physics class. The question below was on the quiz. I don't need help answering it, but was wondering if anyone could help explain to me what this question is saying. Talking to my professor proved to have only confused me more. While he managed to give me a brief explanantion as to why the answer was E, I still didn't quite fully understand why. According to my understanding, equipotential lines are just graphical representations of pathways of equal Voltage. Having a higher "density" of equipotential lines therefore, didn't make sense. After all, aren't there technically infinite amounts of equipotential lines? I had the same reasoning for field lines. My original answer was A, but having had two tries to answer (and A being wrong) I put none of the above. 3. The charge concentration on the edges of a capacitive plate are A) higher because tangential forces on the charges force more charges to group together B) lower because the field lines are not straight. C) higher as evidenced by a higher density of equipotential lines. D) higher as evidenced by a higher density of field lines. E) answers a), c) and d) F) answers a) and c) G) none of the above. ANSWER: E We did a lab on field lines and equipotential lines, where we mapped the voltage at certain points and then created a plot (see attached.)
  5. So I'm currently working on some physics homework to prepare for an upcoming exam. We were assigned the following problem: "Calculate the rotational inertia of a meter stick, with mass 0.56kg, about an axis perpendicular to the stick and located at the 20cm mark. (Treat the stick as a thin rod.)" Here is how I attempted to solve the problem: Using the Parallel-Axis Theorem, I=Icom + Mh2 I found the Icom (using a table of values) to be: (1/12)ML2 Filling it in for the equation: I=(1/12)ML2 + Mh2 Knowing the values of every variable, I plugged in: I=(1/12)(.56kg)(1)2 + (.56)(.3)2 My final answer was: I=.097 kg-m2 But using the list of answers our Professor provided, it's supposed to be .97 kg-m2. I'm inclined to think the professor made a typo?
  6. As we head into the future, will religion ever lose it's grip amongst the people? I think that it will lose its influence as science takes a stronger grip on people's understanding of the universe, but I don't believe it will ever go away completely. What are your thoughts about this? I believe religion was a good way of giving people explanations for the meaning of the universe (even if the explanations were false.) It was an attempt at explaining something that no one knew the answer to. This form of thinking, in my opinion, is what helped derive science. That being said, religion also spawned a lot of mindless followers who didn't ponder anything themselves, thus leading to the cause of history's many problems. And is the Bible guidance for humanity? No. No one needs a piece of text to tell them right from wrong. Those decisions should be made individually, and have benefits and consequences for that individual.
  7. My assumption is that the rover would not be able to survive the conditions on Titan. The rovers batteries' electrical current would come to a trickling halt in the freezing temperatures. The rover would definitely need some source of heat to protect the batteries.
  8. This summer I went out cliff-jumping with a couple of friends. The cliffs we went to (known as pulpit rock, located in Lake Placid, New York) had different heights to jump from. There was the 19ft cliff, 24ft, 40ft, 50ft, and 60ft. It got me thinking... what's the maximum safest height to jump from (assuming you land in the water correctly)? I ended up jumping the 50ft after MUCH deliberation, and the impact on the water didn't feel bad at all.
  9. The safe side would be to tell the djinn to go up and down a 30 ft. pole while counting to infinity at an interval of 1 minute for each number. Upon each spoken even number I should receive a million dollars in my bank account. Upon each odd number, a new break through in medical science should be made that finds cures for diseases that were previously thought incurable. While's he at it, he can also end world hunger once he reaches the number 100. The benevolence of the djinn would be seen world-wide. Statues of it would be made in his honor... which would only slowly torture him on the inside as he realizes that he will never obtain the chance to destroy the world. Problem Solved.
  10. RVJ

    Chemistry Books

    As part of a more integrated way to learn Chemistry outside of the classroom, I have started reading several books dealing with different parts of Chemistry. I have just finished reading: The Periodic Kingdom By: P.W. Atkins It was a great read that helped me understand exactly how intricately interconnected the elements of the periodic table are. It reinforced the information I have learned behind electron shells (the topic we are currently studying in my chemistry class). I have just started reading: The Periodic Table By: Primo Levi Thus far, I can't say I know enough about the book to give an opinion. This book doesn't deal with Chemistry specifically, instead it is an autobiography of the Chemist Primo Levi. Which books would you recommend?
  11. There are 8 people (Father, Mother, Thief, Policeman, 2 Sons, 2 Daughters) trying to cross a river by using a raft. Only the adults (excluding the thief) know how to operate the raft. A total of only 2 people are allowed on the raft at any given moment. The raft must travel back and forth across the river in order to pick up all of the people. Rules: You have the following people trying to cross a river: Father The father cannot stay with any of the daughters, without their Mother's presence. Mother The Mother cannot stay with any of the sons, without their Father's presence. Thief The thief cannot stay with any family member, if the policeman is not there. Policeman Allowed to travel with everyone. 2 Sons, 2 Daughters Not allowed to travel without an adult, or be in the presence of the thief without the policeman's supervision. The sons are not allowed to be in the presence of their mother without the supervision of their father. The daughters are not allowed to be in the presence of their father without the supervision of their mother. Both the sons and daughters are allowed to be unsupervised (so long as all other rules are still satisfied). In what sequence must everyone travel in order to get everyone to the other side of the river safely? (Keep in mind that the rules apply at ALL times, and not just on the raft.)
  12. Hello Everyone! This is my first time posting on these forums. I am a student that is currently taking general Chemistry in college -- this is my first semester. During one of our online quizzes, we were posed with the following question: Oxygen gas effuses at a rate of 0.0140 moles/sec through a small hole. A second gas effuses through the same hole at 0.0174 moles/sec at the same temperature, calculate the molar mass of the gas. A.) 28 B.) 77 C.) 63 D.) 50 E.) 51 Here is my work: RO2= .0140 RX= .0174 RO2 .0140 / RX .0174 = √[Molar Mass X / Molar Mass O2] = √[Molar Mass X / 32] (.0140/.0174)2 = Molar Mass X / 32 32(.0140/.0174)2 = Molar Mass X 20.72 = Molar Mass X Here is my question: Where in my process did I go wrong? Looking back at it now, I can not spot a mistake. I used Graham's Law of Effusion (hopefully correctly). ~ Thanks for your help in advance!
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