Physics
For Physics Discussions
1,008 topics in this forum
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Hello, I was wondering in my equipment list should I put: Volume (ml) or (l), later in the calculation I have put (l) but I am confused because all the beakers or measurements I used are all measured in ml? Also one additional question, does anyone know what is a square metal stand called on which we can keep things and then change the height using that stand????? Thanks a lot
Last reply by CalissaRelics, -
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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
Last reply by SC2Player, -
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Hello everyone! I know that our IAs are supposed to be corrected by our teachers and that not all of them get sent off to moderation. I have also heard, that even if you apply for the IBO to regrade your exams, they won't look at you IA again. Now, this presents me with a problem in Physics, as, my teacher is... well. Not qualified to teach IB for several reasons. She doesn't understand some of syllabus, she barely speaks English, and she also happens to hate me for "being always late" which I actually am most of the time, because I noticed an inversely proportional correlation between my time spent in her classroom, and the grades I got on topic specific tests.…
Last reply by Rey, -
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Hi, I'm currently writing my physics IA and I wasn't sure on how many sources was appropriate to have for it. My teacher was not super clear on what he wanted for it so if anyone knows of a good amount to have let me know! Thanks
Last reply by Mr. G., -
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Just wondering because we have to choose soon - Currently find Astrophyics most intriguing!
Last reply by crycry, -
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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 …
Last reply by kw0573, -
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Hey is it worth me staying in HL physics? I failed my first term (by a long shot) and I don't know if it is worth my time to stay in HL physics?
Last reply by samim, -
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When I was listing various topics for my IA, I realized some of these topics have very simple procedures. Will my marks reduce, due to a simple procedure?
Last reply by Abhishek3, -
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I am starting to get a bit worried about the pacing in my HL Physics class. We are halfway through year 1 and have completed only the measurement and uncertainty unit and half of the mechanics unit. To me it seems like we are moving extremely slowly and that there is no way that all the material will be covered before exam time. Is this normal or is my class behind? Thanks for the help.
Last reply by Mr. G., -
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Last reply by Recycle Bin, -
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Hey guys, I was looking into doing cricket as an IA for physics, as it does meet personal engagement, but was wondering whether that would be a good option. I has a couple of ideas that I thought would be interesting to investigate: - Height bowler (bowl release) and bounce - Spin or swing bowling - Weight of bats and force, or bat swing - the "sweet spot" of a cricket bat These are only very rough options. If you think one would be interesting or good to investigate, or have any other ideas, (cricket or non-cricket related) then I would be extremely open to hearing them. Thanks!!!
Last reply by LolzDoingIB, -
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i've just submitted my Physics IA, and I've realised that it's a little bit longer than an EE (still under the 12 page limit somehow). I might've went somewhat overboard on the explanation of my results... So, just wondering, does anyone know if this will affect my marks significantly? I'm somewhat worried about the teachers/examiners getting annoyed about the length.
Last reply by SC2Player, -
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Hi, I'm confused with this question. Does anyone help?
Last reply by kw0573, -
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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!!!!!
Last reply by kw0573, -
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Hello, I have Giancoli Physics 6th Edition book. I read on this website that many people recommend this book. I wanted to know which chapters is required to study for Physics HL? I have taken Astrophysics as my option, so I will refer that certain chapter for it. Thank you,
Last reply by kw0573, -
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hi so my physics IA is about projectile motion ( investigating the effect of angle of projectile on the range of water projectiles) i will be first calculating the velocity of the water hose through the formula Q=AV and then i will launch a projectile with varying angles (15,30,45,60,75) with the same velocity that i have calculated and talk about how they influence shapes of water fountains etc.... with the influence of air resistance and graphing it and talking about why the angle 45 is the optimum angle for furthest range i asked my teacher and he said it was fine however i feel as it is too simple... if it is, what should i change to make …
Last reply by kw0573, -
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Hi guys, I'm thinking about investigating the effect of surface on angular momentum of a spinning coin. I'll be spinning the coin on various surfaces (wooden table, plastic, cloth etc) and measuring its velocity by using slo-mo camera. Would this be a good IA? All suggestions are welcome, thanks. P.S. I'm in Physics SL
Last reply by Alex Perrish, -
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I've completed an IA in physics that is part simulation and part hands-on exploration. In the simulation part, I establish an exponential relationship using a simulation (that I made) which simulates individual particles and some calculus. I was wondering if this is perhaps too mathematics focused and risks straying outside the bounds of the task. I end up concluding that there is an exponential relationship, which is then confirmed using theory (from Option C), then I fit my experimental data to the model to obtain some parameters.
Last reply by IBTopper, -
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Hi, I am doing a physics lab on the deformation of balloons as they stretch, however I am worried I will be focusing too much on engineering formulas and usage in my project. I suppose engineering is really a sub-chute of physics, but I'm worried that if I use too many engineering-specific formulas it will be frowned upon. Am I correct in this assumption? Thanks
Last reply by cnd4747, -
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I would like to calculate the I1 which appears in this circuit (http://subefotos.com/ver/?4ffce5de346fc28082ddd6215177b259o.png). The result is I1 = -5/6 A; however I need to know the exact procedure to reach that solution. Thanks in advance.
Last reply by Bruns, -
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The syllabus changed for the 2016 physics exams... The textbook we use in school, Oxford Physics textbook, doesn't provide much of good definitions. How are you studying for formal definitions??
Last reply by So Young, -
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Hiyah, just a quick question about the physics IA, if one of your volumes was around 0.000070 m^3, do we need to state it as a scientific notation? like 7.0x10^-5?? Thanks!
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Last reply by kokola9000, -
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I have tried everything to understand the Data Analysis/Uncertainties and Errors (Chapter 1) topic of Physics. All I understood in the past papers were the proportionality questions but I don't know how to find uncertainties/fractional uncertainties/absolute uncertainties/percentage uncertainties AT ALL. I just don't understand what formulas to use for the uncertainty questions! They pop a lot so please help. P.S: I read the textbook, but it doesn't really help me solve the past paper questions.
Last reply by samim, -
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Does anyone have resources for practice questions.
Last reply by JesseWilkins, -
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Hi, im wondering how to solve this problem in physics. Two masses of 2.0 kg and 4.0 kg are held in place, compressing a spring between them. When they are released, the 2.0 kg moves away with a speed of 3.0 m/s. What was the energy stored in the spring?
Last reply by kw0573, -
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Hi, I am doing my physics IA on determining the thermal conductivity of a substance. I wanted to know if finding the thermal conductivity of which substance is easier, solid or a liquid. I have been researching this topic, but haven't been able to find an answer to that. Thank You.
Last reply by kw0573, -
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I am sure what I should do for my Physics IA. My question right now is "What is the relationship between the radius of the ball, the angle, and the distance traveled?". I feel that this question is to simple. I was wondering if anyone had any suggestions or other ways I can look at it. I am open to any ideas and I am still at the beginning so I can change it.
Last reply by kw0573, -
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How do I do a) iii)? thanks in advance.
Last reply by Recycle Bin, -
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Hey, So, I have just finished writing up the first draft of my IA. Altogether, I have 2442 words, excluding footnotes, my appendix, cover page and bibliography. Is that too much? My textbook only said that it should be an investigation of 8-12 pages, which it is. I currently have an unnumbered cover page, 11 pages of text, a few graphs, tables and equations, an appendix of one and a half page (pages 12-13), that includes tables with raw data, and a 14th numbered page, that contains the bibliography. Is this too long for an IA? Should I try to cut the words down? Thanks for your help
Last reply by kw0573, -
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Hey everyone! This is my first post on this forum. Anyway, I am currently searching for a topic in the area of sound. I already thought of a number of topics, but my supervisor and me came up with the following topic: An investigation about how air pressure affects the speed of sound. However, we found out that one could encounter difficulties in a practical experiment measuring the change of speed of sound when air pressure is changed (one would need at least a 5m long container whose air pressure could be changed). Also I'm concerned that the topic might be too narrow or have already been covered too much. What do you think of this? Can you th…
Last reply by Orangeade, -
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hi my idea is on projectile motion and measuring how the angle of projection affects the range through derivation while also explaining how it creates a parabolic shape based on the angle also, this comes from the idea of how water fountain projectiles work and ill be doing it in the garden. is this idea good enough
Last reply by kw0573, -
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Hi everyone! We are doing our 10 hour labs at school next week. Despite the fact that we have never gotten an example essay or gotten any help with developing our topics and research question and we only have one class left until then... Our teacher barely speaks English - and I'm not quite competent in his language - and he seems to have problems understanding both the syllabus and us, students. So, we're pretty much on our own here. The topic I came up with is thermodynamics, more specifically measuring the specific heat capacity of some water based fluid. I know it's not very original, but it is something that, hopefully, even I won't screw up. What I'm plann…
Last reply by kw0573, -
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Currently it feels like I am at an impasse. I felt like I needed advice and some help, so sorry if I don't do something right considering this is my first post. Currently my classes are HL Physics and History, SL Spanish, Chem and Math. What I'm having trouble with is my HL Physics class. The teacher does not teach. He is simply more of a facilitator and has even said himself he is a facilitator. It is halfway through Semester 1 of my Junior year and we are only on Dynamics and Projectile Motion. Previous HL students have said they had to self teach the entirety of the HL topics. My class is also a mix of SL and HL students since there wasn't enough HL student…
Last reply by AstroJens, -
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A particle undergoes simple harmonic motion of maximum kinetic energy Emax and amplitude xo. The particle is release from rest at its maximum displace amplitude. What is the change in the kinetic energy when the particle has traveled a distance of xo /3?
Last reply by kw0573, -
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Hiya, which revision guide do you guys think is the best out of these two: Tsoko's revision guide, Cambridge Tim Kirk, Oxford I can't decide on which one to get.. I have the Pearson's textbook and it's not good at all, so I want to rely on the revision guide now..
Last reply by najem, -
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HI! Could someone please tell me how to derive this formula by using Wave Phenomenon d = t sin θ [ 1 - (n cosθ / n' cosθ)] I think some of it is derived using Brewster's Principle and the Refractive Index but I cannot tell how? Thanks.
Last reply by kw0573, -
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Hi guys! I have a doubt, can anyone please solve this problem? I am really having difficulty solving it. The markscheme shows the correct answer but not how to solve it. Thanks in advance This is a sum from the IB Physics Paper 1 TZ1 2015
Last reply by IBTopper, -
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Hi guys, So I am in Year 2 and going to start my IA in Physics. I wanted to request all of you whom have completed the DP or are pursuing it, to advice me on the general format and tips for the physics IA report. So far, most of my lab reports have not been good and I am advised to include more physics terminology, follow coherent order, analyse in depth and evaluate properly. Please advice me on how I can improve upon. Thanks in advance
Last reply by IBTopper, -
IB Physics SL Notes
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Can anyone guide me to IB SL notes for physics?
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What considerations are there writing Physics IA report? For example, my teacher told me to always put error bars when graphing and justify why graph is shaped in such a way it is exponential, quadratic, or whatever.
Last reply by hopefulundertone, -
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Hi, How can I prove that a pendulum follows SHM? I have data from an experiment and the angle used is 20degrees Before using the T = 2pi*SqRoot(L/g) I want to say the Pendulum follows SHM Could someone pls help me ? Thanks
Last reply by kw0573, -
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Insert Selected What is the value of theta 0 in this equation in the image? Thanks.
Last reply by CalissaRelics, -
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Hey guys, Quick question, so I'm doing IB Physics (JUST started hahah) and I'm a little confused about the "orders of magnitude" topic. I don't understand exaclty what we need to know? Cheers!! Alex
Last reply by kw0573, -
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Hello~! Still not quite sure how all this works since the site changed, but I'll give it a shot... I am stuck in the progress for my Physics IA, and I can't find help anywhere. How do I write up a proposal for my Physics IA??? What has to be included? Is there a word count? Is there a rubric?? If it helps, I'm planning on doing an Experimental IA, on connecting impact velocity and the amplitude of the resulting acoustics..... Edit: Nevermind. Thanks guys.
Last reply by Azi Almonnaste, -
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Hi, I came across this pendulum when I for vacation in Germany called THE FLYING PENDULUM and decided researching on it. However, the only thing I find is the history of the pendulum! This is how the pendulum works : Can SOMEONE PLEASE TELL ME PHYSICS WISE WHAT IS THE WORKING HERE??? For example, with the Simple Pendulum : PE is max at amplitudes but here when do we have KE or PE as Max or zero>>????? Thanks.
Last reply by CalissaRelics, -
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Hi! I am trying to find something creative to add to my IA. So what i am gonna do is that i wanna measure the time it takes for a ball to stop bouncing when its dropped from different heights. What can i do to make it more creative? Any ideas? Please help!! Please!!!! Thank you in advance! Any help is appreciated!!!!
Last reply by hopefulundertone, -
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Hey guys!! So as it is July, my November exams are only a few months away. Currently, my worst subject is physics HL. I find it really difficult to grasp (and memorise) all the different concepts and I'm slightly stressed out at the moment as the only topics I'm kinda confident in are topics 2, 3 and 4. So my current plan is to go through the Oxford textbook and take summary notes of each topic. Then after taking the summary notes I plan on doing questions for that topic. I'm not sure how effective this method would be, and it would also be very time consuming. Also I heard that the May 2016 Physics paper was a horrific :') *crying* I'm just wondering if a…
Last reply by J O Y, -
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Heyy guys, so now before the summer Ive been wanting to look through some of the IB Physics past papers. My questions is what is the difference between the SL and HL Physics papers FROM THE SAME YEAR. Ie is the HL paper just the same questions as SL but with some extra questions or can there be completely new questions on the SL paper? Cheers!!
Last reply by Magician, -
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would "melting rate of icebergs" be a good topic for the physics IA? any suggestions for a research question?
Last reply by hussain, -
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Just a bit( well not really) of background info: The topic i intend to do for my Physics EE revolves around fluids(covered in the HL Mechanics). Im not sure which research question is easier to do and more suitable for the extended essay, ' How does the radius of a ball bearing falling through a viscous liquid (e.g. motor oil) effect it's terminal velocity?' or , 'How the temperature of the viscous liquid effects the terminal velocity of a ball bearing?': Either way, along with the variable prescribed in either research question, i intend to also test the effect the radius of the tube the ball bearing will be dropped in will have on its terminal velocity. My ma…
Last reply by Mech,
