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Found 14 results

  1. Hello, I'm basing my IA on bifilar pendulums and require the formula of the time period of a bifilar pendulum and simple pendulum. When I researched online, different sources claim different things. One formula I obtained was T = 2pi*(L/g)^0.5 (2 times pi times square root of L/g), where L = length of the pendulum and g = gravity. Is this formula applicable for both simple and bifilar pendulums? If not, what is the formula for each kind of pendulum? Thanks in advance for the help!
  2. I'm in Grade 10 and I have to come up with a simple physics experiment on kinematics experiment for an investigation, we're not allowed to do free falling or how the angle of a ramp affects speed or acceleration. I'm completely stuck so I was wondering if any of you had any ideas, preferably one using SUVAT equations. thank you
  3. Hi everyone My first EE draft is due in 2 weeks and I really need to start on my trials, but I have a few random questions before I start that I haven't been able to find online (that I understand lol) and was hoping someone here might have an idea? My topic is on duckweed and its ability to "remove" heavy metals (or other pollutants, chemicals etc) and maybe how that will affect the growth of another aquatic plant. If you think you might know anything about this, I would really appreciate if you could take some time to read my questions in case you might be able to answer them Qs: 1. Say if I carried out an experiment where I put duckweed in a small container (ice cream tub size?) of tap water+heavy metal (e.g. lead nitrate) and let it "suck" the metal for a couple days, then took out the duckweed out and put in the other aquatic plant. I would then compare this plant to if it was put straight into the same water the duckweed was initially in and see if it fares any better, assuming that there are now less heavy metals in the water, so there should technically be less of an effect (damage). Would there be any problems concerning the nutrient concentration of the water? Will the duckweed suck a lot of the nutrients out of the water as well, which would put the other plant at a disadvantage from the very beginning that could affect my results? 2. Compared to the method above, would it be easier to do one trial where I put the duckweed in the heavy metal water, another with the other plant in the heavy metal water, and another trail with both plants in the water? Just with this method I was worried that the duckweed would compete with the other plant (for nutrients and space/sunlight) as duckweed is known to inhibit algae growth with its sun-blocking properties (ish) 3. Also, does anyone know of anything else I can test with? e.g. another type of heavy metal (that can be found in a school lab ideally), or any way to test the effects of weedkiller or the such (e.g. one main component of weedkiller that I can test rather than just weedkiller in general? As I feel that might be a bit hard to control) If you actually managed to read through all of that, thank you for your time and I hope you can get at least 7 hours of sleep tonight seeing as you have time to read the forums
  4. Hi, I was wondering if anyone can help me with the investigation portion of my HI. My question is "To what extent did the treatment of interned Japanase Americans compare to interned Jews during World War Two?" I'm having trouble coming up with my body paragraphs. I'm not sure whether I should do one paragraph about how they're completely different and another one about their similarities. Any suggestions?
  5. Hi! I need help to find a good topic for the ib Math exploration HL. I want to have a 20/20 mark. PLEASE HELP MEEE!!!! Let´s do a brainstorm together!!! All the answers are ok. You don´t need to think a lot. THNAK YOU.
  6. Hey guys, I need help for choosing a topic for my mathematics HL exploration.I really liked the topic differentiation and i found it easy so should i work on something related to it? Or something else?
  7. Hi! I'm currently deciding on a title for my history investigation. It's probably going to be something like: To what extent was the Soviet Union responsible for the start of WWII? What do you think? Is it too broad? Should I maybe rephrase it? Or should I think of something completely new? Thanks in advance!
  8. Hey guys! I am planning on doing my EE in biology, and I'm comparing diets of people and their vitamin intake. So my idea was to survey people and have them record everything they eat for 5 days. My original plan was to have 4 test subjects for each group, but my supervisor said I need at least ten per group (so twenty in total) My problem is that I don't think that I can get so many people who will actually want to do this for an entire week... What would you say? I have seen some examples of diet comparison EE's online, and they only had around three test subjects... did they just get a very bad grade then? I'm happy about any advice Thanks
  9. IA

    Hi, I have a IA topic in mind, though is it ok to investigate this? To what extent was the invasion of Grenada of 1983 Reagan's Cuban Missile Crisis? / Compare (and contrast) the invasion of Grenada in 1983 to the Cuban Missile Crisis in 1962. or To what extent was the invasion of Grenada of 1983 in line with the Roosevelt Corollary to the Monroe Doctrine of 1905? Would any of these work?
  10. What are some good methods to formulate an excellent research question that has a historical debate, that can be investigated in 1300 words (is specific), and allows a detailed analysis? My topic is: Germany and the Alliance Systems Despite how smart, "To what extent was Germany responsible for the formation of Alliance Systems within Europe during the pre-First World War period of 1870-1914?" sounds, it is too broad and I want to investigate something similar yet I can not form a specific research question. I have to have a RQ preferably by Friday, Monday next week at best.
  11. Hi guys, I am physics sl student and everybody knows about the internal assessment, and i have choose a good idea but i have no idea how it should look like and have no tips to follow about writing personal engagement, method, ext. so please if any one can help me !
  12. Hi, What is the most exact method to measure the acceleration of gravity? Keep in mind that I'm in IB1 so the method should be understandable and possible to carry out as a lab with the knowledge I have. Thanks, Daniel
  13. Hi there, So soon I'll be starting on my first Internal Assessment in physics. I need some suggestions for an experiment / investigation I'll be completing in regards to: Rubber Bands, or Elastic Bands, whatever you like to call them. If it's possible, suggest something that would be rather easy to out take, with a few variables, you could suggest it in a form of a investigation question. – Thank You!
  14. 57 downloads

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