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Exams

  1. So I need help because I originally had a EE topic that I recently discovered wouldn't work out so I have now been scrambling to come up with a new one. My new basic topic is: The effect of temperature on sound waves. But I need help refining this because I'm not sure where to go from here. Any help would be really appreciated, particularly if: - You have finished a physics EE and have advice - You have knowledge on sound waves and their variables - You have any other ideas for a new direction for this topic - Any related research you know of - etc. Thank you!
  2. Hello, I was wondering if I could get some help regarding my Physics EE? I am examining how changing the mass of a copper plate at the end of a pendulum effects the stopping distance of that plate when passing through a horseshoe magnet directly beneath it. Due to the changing magnetic field the copper plate is temporarily magnetized which generates a secondary magnetic field. This secondary field resists the one that induced it and slows down the copper plate. I am having trouble with my hypothesis and determining what will happen. I was wondering if increasing the mass of the copp
  3. Hello, forums. I've just joined here hoping for assistance in picking a more refined EE question. I am in year II of the diploma programme, and am pressed for time regarding my EE. My original Extended Essay was on aerodynamics, but due to several problems it didn't work out. As a result, I've had to make a decision to change my EE topic, and physics is what I'm sticking with. Currently, my chosen topic is optics - lenses, and while I'd prefer to do it on aperture, diffraction, or distortion, I'm open to doing other things in optics as well. By this point things have gotten to a head and I hav
  4. Hi fellow IB students! I just wanted to let you know that there is a really useful and cool tool for IB Physics. Me and my classmate (i.e. also an IB student) have developed a twitter and an instagram for IB Physics related things and we would really appreciate if you followed us! It is basically something you can access from your mobile device at any time (since most of us have twitter and/or instagram accounts) and is therefore very available and handy. We post summaries on IB Physics topics as pictures on instagram (both SL and HL topics) and useful tips/stuff that relate to IB Physics
  5. Do you think I can write my EE in physics about the comparison of exoplanets based on their habitability (which also based on many different factors)?
  6. Hi! It's about time for me where I have to choose my courses for next year, I'm currently a sophomore doing pre-ib. But I'm not sure if I should continue doing chem/bio/physicis at the ib level. This year's science honors was already something that had me hanging my a thread. My grades were barely ever higher than 70% especially on tests. Now I'm stuck in the middle wondering if I should just do the sciences at normal level so there can be a higher change of me raising my grades or should I attempt and take the risk of taking the sciences at ib level? I'm just wanting to hope that I can g
  7. Hey guys, I'm new here. Could you help me out with the solutions to "Test yourself" in the Tsokos book(physics). I know there are answers in the back but i seek detailed answers. Thanks! Shrish.V IB DP Class of 2018
  8. My last topic was too complex for me so I decided to change it to something simpler but I'm having hard time developing my ideas. I'm planning to do my math IA on something about projectile motion and baseball using calculus. My current idea is "what is the most ideal angle for a batter to hit a home run with the least force possible?". I know that I will take air resistance into account, but I may neglect drag force caused by wind as the calculations may be too complex. Also, I'm not sure if I should include the calculation for momentum of ball-bat collision or not as it may be too physics-li
  9. I have been researching topics for a while now and have come up with an idea that I like. My idea is to investigate the effect of the angle of attack of a frisbee on its trajectory/displacement. The topic would include investigating how lift is generated, how torque comes into play, the temperature and pressure of that air. I have seen a few extended essay exemplars and their topics seem much more complicated and advanced. Do you think my idea is suitable for an EE?
  10. Hello, I teach IB Physics and just wanted to let you know about the latest videos I uploaded on Youtube in addition to over 100 other videos: Sub-topic 4.1 - Simple Harmonic Oscillations I hope that it is useful for you
  11. Hey so I have a question. If lets say I do my IA in biology and follow an experiment that has been done before but I change a few things to make it my own? e.g the effect of temperature on seed germination but instead of copying the exact temperature conditions, I come up with my own. Is it plagiarism? Do you have to come up with your own experiment?I'm freaking out
  12. Hi, I am doing my physics ia project about lift force. I have done a lot of research on how to measure the lift force with Bernoulli principle, and after I done the experiment. I found that it may not followed that principle As a result, I searched the other ways to explain the lift force, and realized probably Bernoulli principle was not the best explanation. However, I did found some trend and relationship between variablesin my data, which obeys the Bernoulli principle but not correct according to the real life. That's why I come here and ask for help. THANKS!
  13. Hey guys can y'all please tell me which textbooks are great for the following IB subjects: HL-Phy,Chem,Math SL-Eng A, French B, Business management Thank you
  14. Guest

    MATHS IA HELP - TIDAL WAVES?

    I have currently chosen to investigate tidal waves for my maths IA. However, I am unsure as to what other explorations I can do under this. (And whether or not this is too simple...) Is modelling and predicting future tidal waves appropriate? I have secondary sources that'll give me data of tides at different points in times at a beach, so I will be able to graph them. I will also use trig and algebra to find the ideal time to visit the beach with my "ideal" tidal height of 1.5 metres I am uncertain as to what other maths/exploration I can apply to this Any suggestion
  15. Hello. Recently I have had meetings with school administration regarding which IB subjects I want to select. I am certain of most of my subjects aside from Physics and Psychology. As it stands, my subjects are as follows: HL English Lang.Lit. HL History SL Maths SL French Ab initio I would like to do Physics and Psychology, one of course HL and the other SL. Choosing Pysch HL would allow me to achieve a higher score than doing HL Physics. On the other hand, selecting HL Physics would allow for a wider range of university/career choices. I am thinking of moving into a course studying Artificial
  16. Hello, We are now getting started with our IA labs in SL Physics, however I'm not sure if the topic I've chosen is appropriate. I have chosen to find the correlation between the time needed for a coffee filter to drop from a certain heightand its mass (increased by adding washers to the inside of the filter). I was going to focus on how the increased mass would lead to increased acceleration and speed. Is this experiment too simple for an IA design lab? Or does IB simply grade you on the basis of how well you identify variables, perform an experiment in an organized fashion, and be able to und
  17. Hello IB Physics Students, We are excited to share with you our newest addition: The complete, step-by-step, simple-to-use PaperPlainz IB Physics Internal Assessment Guide! To give you even more support with your IA work, we also launched the PaperPlainz Facebook IA Community where you can ask questions, clarify doubts and most importantly support each other during the IA process. Click here when you are ready to join Just a reminder that our offer to give full access, free of charge to all PaperPlainz
  18. Hi, I wanted to do an IA investigating the relationship between either: - the refractive index of a material and Brewster's angle, or - the wavelength of incident light and Brewster's angle I am not sure how to even measure the wavelength of incident light, and to calculate Brewster's angle I would also need the wavelength of the refracted light which I don't know how to measure either. I also don't know how to measure refractive index, so I'm kinda stuck there. I was wondering if someone could help me find a source which would explain how to carry out an experiment to find
  19. Hey guys can y'all please tell me which textbooks are great for the following IB subjects: HL-Phy,Chem,Math SL-Eng A, French B, Business management Thank you
  20. Hello! So I will be attending UWC next year and I want to do a physics major in university in the US or UK. I have already completed 2 years out of 3 years of high school so I already have good kbowledge in math, physics, chemistry, biology, technology, history, geography, french, arabic, english. I am pretty good in scientific subjects so here is my list of potential ib subjects next year: Math HL (further studies) Physics HL English A Environmenal and Social Studies SL (as a social science) French B Computer Science SL Does this list make me
  21. Hi! im wondering how to solve these projectile motion problems: A particle is launched horizontally with a speed of 8.0 m s−1 from a point 20 m above the ground. a Calculate the time when the particle lands on the ground. b Determine the speed of the particle 1.0 s after launch. c Find the angle between the velocity and the horizontal 1.0 s after launch. d Determine the velocity with which the particle hits the ground. A soccer ball is kicked so that it has a range of 30 m and reaches a maximum height of 12 m. Determine the initial velocity (magnitude and direction) of the bal
  22. Hi guys! For my IA, I'm investigating on the relationship between time fall a parachute to fall and its surface area, but I can't get a linear relationship. The parachute didn't reach the terminal velocity, so the velocity is changing when the A is changing and it's also accelerating downwards. What can I do? Help please!!!!!
  23. For my IA this year, I was given the topic of exploring surface area and drag. The assessment requires me to produce a graph with a meaningful gradient. I am using the drag equation to formulate my graph (where Fd = 1/2 p u^2 Cd A) and when I plot drag force against area I get the gradient as (2 Cd/ pu^2). My question is if this gradient is useful? Surely the graph implies the the drag coefficient is a constant, but surface area is changing. Any improvements and/or changes to my possible graph would be much appreciated.
  24. Kek

    Physics EE

    For my physics EE I decided to look at gravity and stability(my topic) and "how does the loading of a truck affects the shift of the central gravity and how that shift affects the tipping point of a truck if its in a stationary position?"(research question) . For my experiment I've used blocks of different masses that I placed on a aluminium platform using different variation. Where aluminium platform is like a truck platform and the blocks that I used act like loading. So basically I placed them in different ways and looked at the which angle each object will tip over. In my essay I will show
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