Physics
For Physics Discussions
1,008 topics in this forum
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Hey all! We have been learning about refractive index and light lately. I was wondering if temperature affects the refractive index or not. Does it really? My teacher went into this but I couldn't understand. Also is the refractive index of substances dependent of their density? How? I would really appreciate it if someone can come up with some answers; my teacher tries to explain it but my brain just wouldn't get it Thanks in advance
Last reply by thecsstudent, -
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Okay, so the science teachers at my school are a joke. NONE of them have ANY sort of training when it comes to IB things, and I desperately need help. For my Physics Internal Assessment, I have chosen to do a research paper, rather than just an experimental paper. Does anyone know where I can find out how to do one? A rubric, or some sort of criteria/directions for a research paper? Because none of my "IB" science teachers do. Thank you
Last reply by kw0573, -
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Okay, so the science teachers at my school are a joke. NONE of them have ANY sort of training when it comes to IB things, and I desperately need help. For my Physics Internal Assessment, I have chosen to do a research paper, rather than just an experimental paper. Does anyone know where I can find out how to do one? A rubric, or some sort of criteria/directions for a research paper? Because none of my "IB" science teachers do. Thank you
Last reply by Major Awesomesauce, -
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My physics IA topic is factors affecting surface tension. I know that's not in the syllabus, but my teacher suggested it to me and it seems interesting. But what exactly am I supposed to do? Do I just carry out the experiments that show how each factor affects the surface tension of the liquid? (Eg- when temperature increases, surface tension decreases) Or is there something else I can do? Please reply fast guys, I need to submit a list of required materials by the end of this week. Thanks
Last reply by cobrakebab490, -
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when a person is having a free falling, will the speed always be less than 10 m/s?
Last reply by IB_taking_over, -
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Last reply by IBdoingnothing, -
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Travelling waves of wavelength 32 cm are created in a closed-open pipe X of length 40 cm and an open-open pipe Y of length 50 cm. In which pipe or pipes will a standing wave be formed? A. X only B. Y only C. neither X or Y D. both X and Y How is this calculated? Thanks for answers
Last reply by anishaaas, -
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I am wondering, where, when and how do we apply astrophysics in real life?
Last reply by Physics Tutor, -
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Hi! Does anyone know where I could find specimen papers for the new physics guide for may 2016? Thanks!!
Last reply by Moma, -
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Hi! I'm wanting to do an IA on something to do with gymnastics/swimming, or another kind of sport and I'm not quite sure how to start.Would the data have to be primary, i.e. video myself and analysing those videos, or could videos off Youtube be used?Also, what kind of physics would I be able to use in the IA? thanks a ton!
Last reply by kw0573, -
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Hey guys, My exam session is May 2016, and I'm going to submit my physics and chemistry IAs soon, but I still have some troubles with the formatting. My teachers do not explain how to format the IA according to the new syllabus thoroughly. If anyone has a checklist or a template for the new syllabus IA and is willing to share it with me, I would be very very thankful. Thanks in advance
Last reply by Udrajaka Girindra, -
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I would say its between Quantum and Electromagnetic Induction, but quantum is interesting so I would say electro is just harder in general for me
Last reply by Physics Tutor, -
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How do we go about finding the answer for this paper 1 exercise? So far I have thought of this: V = E - Ir (where V is p.d. across the motor) E/t = C/t *V => E = C*V => V = E/C = 9000/450 = 20 V So 20 = E - Ir So I am guessing the answer is 24 because E needs to be greater than 20.
Last reply by Physics Tutor, -
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Hey guys! My IA is on investigating the relationship between mass and damping effect of a spring. I was wondering, with an increase in the mass attached to the spring, will the damping increase or decrease? And why?
Last reply by Slovakov, -
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why does the spring constant decrease as the temperature increase?? may i know the reason behind....?
Last reply by Slovakov, -
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So basically the criteria for the internal assessment topics seemed so ludicrous that I put them off until the last minute because because I simply could not think of an adequate topic. I must start and finish an entire physics IA and a chemistry IA(both SL) by Monday, and I would prefer to use a virtual simulation(using algodoo) to run a basic experiment just so I can get some points. If I get at least some points on the IA, I should be able to secure a passing grade since I am confident I will get 6s and 7s on each paper for exams, and I will happily settle for passing. Also, I would like some clarification on the subject of IA topics. Are we supposed to basically exp…
Last reply by ShivaniVino, -
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Hello, After I don't get good significant data results for my IA experiments, I decided to change it The new one would be: on leakage (area) and the affects on the volume of leaked (water) The experiment would be on the relationship gained fro measuring the leakage (very small like needle diameter) and the time taken and also volume loss of water. The initial volume of water would be 1500 ml. Therefore, the area of leakage would be the number of holes in the container. The physics involve would be atmospheric pressure and also rate of drainage (does not seem so physics though). Any comments or improvements?? (harsh ones are also welcome)
Last reply by Slovakov, -
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Hello everyone! Like many other students now, I'm trying to finish up all of my IAs before the mocks and eventually finals these next few months. However, I am stuck as how to linearize my data... my teacher wanted me to try first before any additional help will be handed out/I use a complicated formula I found online. I've seen many Youtube videos, past questions etc. but none of them seemed to be the shape of my graph My experiment is the singing wine glass experiment, where I measure the frequency produced when varying the amount of water inside the glass: (copy pasted the table didn't seem to work to well either, sorry) Volume (m3) - Mean Frequency (Hz) ± 10Hz …
Last reply by Anthony Bui, -
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Hey guys, We just uploaded Free IB Physics Notes onto our website; they're really well written, concise, and good to base your studying around. You can find them in our Resources Section: http://www.ibsurvivors.com/resources/ Hope you find them helpful! Shikhar
Last reply by Moma, -
I'm not a huge fan of Time New Roman and I'd like to make my IA a bit more attractive. Will the font Proxima Nova work? It's a sans font though: Do you think this will be ok?
Last reply by boeing186, -
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Hi. I'm making my physics IA and I'm filming in order to measure the time taken and I was wondering what is the uncertainty of this measurement. Because it films in 60fps so it's 1/60 of a second?
Last reply by Sandy, -
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Does anyone know whether 1.5 spacing is mandatory for my Physics IA?
Last reply by Sandy, -
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Can't do this wave question, can someone solve this clearly please? thanks
Last reply by ShivaniVino, -
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I am starting IB next year and am considering taking HL Physics, this is only because my school doesn't offer SL. I have no prior experience with Physics and am in Algebra 2 now and am going to take SL math next year. Does anybody have any thoughts on this? Do you think that this would be manageable?
Last reply by ShivaniVino, -
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So I handed in my final IA draft today because it was our deadline for it, and something that just occurred to me now is that I used psi as a unit for air pressure inside a football (my experiment) and that may not be the right one to use. I went for psi because it was the most commonly used unit in all the sources I found on physics of a ball's rebound. I'm worried I just ****ed it up though. Also do I now have to change all my values for pressure so that's converted to Pa?? My teacher went over my IA and he didn't see anything wrong with it (and he's a harsh grader). What do I do????
Last reply by kw0573, -
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explain step by step pls!
Last reply by Jai Chandak, -
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Hi everyone! I was thinking about the IA and what I could do and I came up with the idea to find the relation between the coefficient of friction and the angle of inclined plane. However, this seems to be too easy so I thought I could use a small ball and then it would get a little bit more complicated as I would have to include not only potential and kinetic energies but also rotational kinetic energy. What do you think? Is this good enough for HL student?
Last reply by kw0573, -
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Hey guys!! I'm currently selecting courses for junior year next year, and I'm wondering if I should take AP Physics or IB Physics. AP Physics is a one year course, and will cover both mechanics and E&M, while IB Physics is a two year course. I want to take AP Physics because I think it'll prepare me better for the AP Physics Mechanics exam as well as the SAT Subject Test (I'm planning on taking both). However, AP Physics is known to be harder than IB Physics so I don't want to burn myself out...my other classes are already very challenging. Any advice on which physics course (IB or AP) I should take???
Last reply by kw0573, -
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I'm doing an air pressure experiment for my IA (second attempt as my previous topic was a bit too complicated). I basically increase the air pressure in a football and drop it from a fixed height. I pump it once and then drop it 3 times from 2m, again and again until the ball is fully inflated. My teacher said that it wouldn't be easy figuring out how much air pressure I'm adding per go so it was better to first do the experiment and work it out later. I can't find any sites that discuss this, so how do I figure this out? Do I take the ball's max air pressure - 8 psi and divide that by the amount of pumps it took to inflate it all the way?
Last reply by kw0573, -
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I am doing my Physics HL IA on "how does the mass of impurity added affect the surface tension of water?" It did work and I got the results but I am actually worried whether it is relevant to physics. I could try to explain the theory behind it in terms of physics by mentioning intermolecular forces, cohesion... etc. and not talking about chemistry. Yet I am quite worried if the concept is more like chemistry. Although my teacher approved and advised to just explain the concept in terms of physics I am not too sure. Could anyone tell me if it is fine to continue with this topic? thanks
Last reply by kw0573, -
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i want to know if the kinetic energy gained by the boat from the wind is making the boat to travel. I mean, does kinetic energy turns to potential energy and makes boat to travel?
Last reply by kw0573, -
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what could be the basic formula for wind that is affecting the boat to travel I want to say more the area of sail it will travel faster but i cant explain with the formula thank you
Last reply by Anonymous Student, -
Is my Physics IA "too simple"?
by Guest- 5 replies
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Well, I'm taking physics SL and is suffering from deciding a topic for my IA. I'm really obsessed with the idea of investigating how different shapes of parachutes affect the time of a fall of the parachute. But then my teacher keeps on telling me that my topic is "too simple". She told me that the lower-grades students are already doing a similar thing and that I should have multiple independent variables for my research. I heard that a Physics IA (especially SL) can be simple, but is my topic that too simple? She requires me to find "new discoveries" and now I don't understand what she's talking about. Can somebody give me an advice on my RQ or about Physics IA in gener…
Last reply by Sandy, -
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Please guys I need your help! Just 2 weeks ago my teacher informed us about the internal assesment, the first draft is hand in in two days! Every experiment I sugested to my teacher was "to simple and not creative", I've been killing my brain to come up with an idea. Finally I found one that she approves, but I not sure how to do it. Is about refraction of light in water (with different contaminats), my problem is I don't know how I'm going to measure that, if the changes are so small. Should I change of experiment? Can you gus please help me? I don't know what to do, I have 2 days!
Last reply by TaaCloack, -
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Could anyone help me with this question? The correct answer is D, but i'm unsure as to why?
Last reply by kw0573, -
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I'm currently wrapping up a lab report for my physics class on Specific Heat Capacity. These are the results: https://docs.google.com/spreadsheets/d/1iJBl834-z3rFRlfGlA0WJ-0hffxrDcyj6T6CDhLaj6c/edit#gid=0 Note: Our group did not have enough time to do other metals so we were just given the final column from other groups. I will need to do the following: 1. Plot graphs 2. Evaluate and analyze the graphed data 3. Conclude Since I'm not a genius when it comes to physics (and on the verge of failing!), I'm stuck on what data to plot, and what to analyze. I'm new here and I hope there can be someone that can help me with this. Thanks.
Last reply by Sandy, -
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guys, does it matter if you're in SL/HL for IA? Can my IA be "How does the horizontal range accuracy of a projectile depend on its initial velocity at launch?" Measuring horizontal range in real world and comparing it to theoretical/predicted/calculated values. Good enough or too easy for HL?
Last reply by kw0573, -
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For a while I have had some questions on how equipotential lines work in fields. I understand that all points on the line have the same potential and that the lines are at right angles to the field lines but what I don't understand is why: 1) When a field is not uniform and the mass/charge is spherical why are the lines more close to one another the closer to the mass charge we are and then become more and more spaced out? Theoretically, shouldn't there be infinite equipotential lines for every possible distance from the mass/charge? 2) Also why when there are two masses close to one another the equipotential lines sort of merge and end up becoming the same the farther …
Last reply by kw0573, -
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I am wondered, what will happened to the spring, if the temperature of the surrounding increases. When it is stretched, compared to the room temperature, will it stretch more?? Or lesser?
Last reply by Sandy, -
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I've looked at the criteria and it doesn't seem that getting the points is so hard. Yet my teachers keep telling me that getting an A is practically impossible, why?
Last reply by Sandy, -
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Hello IB Survival, I need help for deciding my EE topic, I am in Physics HL, very interested in engines, specifically for Motorcycles. Wanted to know if anyone could help me for deciding a topic and even a possible Question. I was thinking on mostly Work Done or the Efficiency of the engine. Thanks ahead if I don't thank you later
Last reply by Sandy, -
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I've been looking for a recently published version of a Physics study guide. I have an Oxford Bio Study Guide and it's pretty good. Is the Oxford Physics Study Guide good as well? What study guides do you guys use?
Last reply by Sandy, -
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Hi everyone, im doing IB HL physics in my second year. I got a level 2 in my mocks. i wanted to apply to uni but probably wont go now because of physics. I have workers so much, i dont know what else i can do. How do you guys revise ? Do you have any methods of revision that could help me .... Thanks
Last reply by kw0573, -
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Hi there! Could someone explain to me why in this question, initial velocity(u) is considered to be 0 although it says in the question that it is of 5.0 ms-1? Thanks!
Last reply by Slovakov, -
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Hello, my friends I am Physics HL We had a discussion on accuracy and suddenly this thought (Why people expect accuracy, when nothing is accurate???) occurred in my mind and my teacher was happy with my notion. Well what do you think about this? Have you any such notions in your mind if so please to share it it can also be an out of topic one
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Hey everyone! I want to take Chemistry HL and Physics SL next year when I enter IB. I just wanted a heads-up on the workload. Also, do you need to be insanely talented at math to do this combination. If you do this how difficult are you finding it on a scale of 1-10. my signature is outdated, just saying
Last reply by pppraz58, -
Does anyone know any good ideas for a physics IA. My teachers says it cannot be simple like measuring the effect of light intensity on the refractive index, and it also must hold application to the real world and can be used in our daily lives. He gave me an idea about using light intensity and power generation but I'm not sure how I would set that up as I don't think I have the materials to do it. Is there an IA topic that is not too much of a hassle to setup and also gives application to the real world?
Last reply by AKGAKG, -
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I want to do my physics IA on Bartons Pendulum but i need help in trying to take it up to an exploration level, if u guys have any idea about a proper research question related to bartons pendulum , the help and advice is much appreciated
Last reply by kevG, -
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Hello, So right now im in grade 10 and Im going to be starting the IB next year. The subjects I've signed up for are: HL Maths HL Physics HL Chemistry HL Geography SL English SL German B I really really love physics and all it's something I want to do at Uni. Right now im in the Additional Maths IGCSE class and it's going alright (~+80% on tests generally) and im just really scared im not going to be able to make it in HL Maths, it's a bit like if I can't get 7s or sometimes 6s before the IB how am I going to even be able to get a 5 once in the IB. Either way, basically, IF I were to get really bad grades in HL Maths and therefore changing down to SL. Do you guys still …
Last reply by El :3, -
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So basically I've been doing four HLs, and I'm not feeling incredibly swamped or anything, but I can't guarantee that I will get 7 in all of them. I want to study Computer Engineering, so Physics HL would definitely be recommended, but my physics teacher is terrible and I don't believe he can finish anywhere near the curriculum in time. Furthermore I feel that he doesn't like me... he's marked multiple assessments of mine incorrectly and doesn't like listening to me when I ask what I did wrong. Even though Physics is a good HL to have I don't feel he will support me through my four HLs. Should I drop to SL so I don't have to worry about physics anymore? I know in SL I …
Last reply by Sandy,
