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    May 2018
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  1. Hello, I'm a high school junior taking IB physics HL, math HL, chemistry HL, Business HL, English SL and Korean SL. I want to study biomedical engineering in university so I chose to do double science. Logically, I would have to choose biology and physics, but my school is pretty small and they didn't offer physics and biology together. The only combinations were physics-chemistry or biology-chemistry. I thought physics would be more useful for me since I wish to study more of a mechanical engineering side of biomedical engineering, but I'm worried that I might have a disadvantage just by the fact that I didn't take biology. Can anybody tell me whether or not that could affect my admission? Also, would there be a way to indicate in my college application that I wasn't able to take biology just because of my school policy? Thanks
  2. I asked a similar question previously but I'm asking again about something slightly different. I'm writing my EE in physics, and my research question is "how does wavelength of light affect the energy output of a photovoltaic cell?" I'm planning to use different lightbulbs which have different wavelengths to find out how the wavelength affect the voltage (or current) of the solar panel. Some example of those lights are: incandescent bulb, fluorescent bulb, LED light, sunlight and UV light. Since I'm not very confident in physics, can any physics genius tell me whether this is a worthy experiment? What if the wavelength doesn't affect the voltage (or current)? I really need your advice!!!
  3. I'm taking physics, chemistry, and math HL and recently started to do my EE in physics. Although I'm not planning to write my EE in any of my SL subjects, if you are thinking of pursuing a science major, it's probably better to do a science EE. I personally want to major in engineering, so I thought writing an EE in physics would be a great practice before I actually get into university. Looking at your HL subject choices, you might also be thinking of pursuing a science major. If that's the case, I recommend trying one of the science subjects. This is just my opinion, so if you still really enjoy your SL econ, you can just go for an econ EE! Good luck
  4. Thank you very much for helping me. That website actually helped me to understand the concept! In addition to the website, I found this useful pages in one of the physics textbooks my teacher had.
  5. Yeah, I also looked at that equation, but I don't know how to use that equation when I only know the pressure, height, density, and gravitational field strength. I currently don't know the velocity and what that "constant" is. Is there a way to work around this? I'm desperate for help!!
  6. I did a practical on radial hydraulic jumps and I need to explain the theory behind it. I know how to calculate the pressure using pressure=phg formula but I don't know how to relate the water pressure and the velocity of water. I searched for some equations but they are way to complicated and I don't understand which one to use since they seem irrelevant to my situation. Could you please tell me an equation that simply relates the water pressure and its velocity? Also mention what each variable in the equation refers to. Thanks
  7. I recommend relativity because my teacher said the exam questions are very repetitive so you just need to memorize the answers!!
  8. Hi, I'm junior but I already started do my practice IA. My IA topic is looking at the relationship between the diameter of hydraulic jump and the pressure of water. To elaborate, hydraulic jump is the circle you can see on the surface of the sink when you open the tap water. If the pressure of water increases, the diameter of the circle also increases. I'm using a burette to drip the water and I measured the diameter of the hydraulic jump when the water left in the burette was 50mL, 40mL, 30mL, 20mL, 10mL. Hope it helps!
  9. Hello, I'm a physics student and I'm writing my EE in physics. My research question is "how does wavelength of light affect the energy output of a photovoltaic cell?" I will be comparing different types of lights such as incandescent light, fluorescent light, sunlight, and LED light. I bought a small 1W solar panel and now I need to find some ways to control the experiment. My biggest concern is controlling the intensity of all light sources. I believe since my independent variables are wavelengths of different types of light, I should keep the intensity same right? For example, I can't have one tiny LED light and 1 240V incandescent light because they produce different amount of light that will be used by the solar panel. Is there a way I could figure out the intensity of each light? Or is the intensity irrelevant in my experiment? I have no idea. I would greatly appreciate if you can give me some advise as to what I could try. Thank you
  10. I'm in my first year in DP and I'm struggling with my CAS. Even though I am a part of NHS (National Honor Society), I cannot think of a single feasible idea for my project. I have some hours for Activity portion of CAS, but I need a project for Creativity and Service. I would like to initiate a project it in our school rather than participating in activities organized by external organizations. Do you guys have any ideas for a good CAS project?