I need help with my IA3!!!!

My stupid research assignment is due on Monday (final cuz procrastination duh) but anyways I'm hard-stuck on how to complete my 'Discussion' section, the one after your rationale and RQ.

So my RQ is: "How does the sound exposure (volume and duration) to earphones affect the hearing health of Australian teenagers?"

For the discussion section I'm trying to set it out in subheadings which are:

  • How hearing loss varies by age
  • How earphones actually cause hearing loss + what volume and durations are harmful.
  • Information to directly answer RQ.

I need to know if this is good enough and also how to do the 2nd dot point. I don't know if I should discuss how earphones create sound waves, and the frequencies that are harmful. I'm trying to but the problem is that I can't find ANYTHING that answers this. If the sound wave stuff would actually be important is the main question.

Please help! 😭 Btw I'm in yr10 so this is important so I can do physics next year. Also I'm the top of the class and don't want to lose that spot.

    DumbNerd
    Hey DumbNerd,

    Just FYI about some terminology, if you are in Grade 10 doing Unit 1&2 content now, your research investigation is called FA3 (rather than IA3) as this stands for "Formative Assessment 3". Assessments starting with "I" only refer to the ones in Grade 12 (Units 3&4) which count towards your ATAR. No stress tho 😀.

    As for your research investigation, I need to also know your claim to give a more accurate answer. I just want to quickly note that ensure you keep your 1st dot point within the confines of your RQ. Your RQ determines the scope of your investigation and you have specifically stated "the hearing health of Australian teenagers" so when you discuss the first point, don't talk about other age groups but rather investigate how listening to music now affects their hearing when they are older, if that makes sense.

    Considering this is a physics assignment, I can only assume that your claim and RQ focuses on sound waves (i.e. sound waves, frequency, wavelength, longitudinal waves etc.). So, I would highly recommend for you to discuss how earphones create sound waves and thus, what makes them harmful to the human ear. From your RQ, the bottom line is that you have to investigate how sound is good/bad for health. So, discuss how different frequencies (i.e. pitch of sound), different amplitudes (i.e. volume of sound) and different durations (i.e. time) affect the human ear (feel free to discuss how the tympanic membrane vibrates and transforms the vibrations to mechanical movements of the stapes, malleus and incus etc.). I would maybe alter your RQ very slightly and add "pitch" into the brackets as well so you can discuss the frequency of sound waves and make it more physics-y.

    The first point of contact should be your teacher so please ask them but my strong opinion on this would be that adding the "sound wave stuff" is very important to the RQ - its how you show off your physics knowledge.

    Anyways, hope that helped and feel free to be confused about what I said and ask questions 😆.

    • PP

        PhytoPlankton Thanks a lot for the advice! I'll try to find sources that actually give me helpful information (lol). By the way my claim is "Earphones have been linked to increased rates of hearing loss in Australia", very basic. Gonna work extra hard today. 🥲

            9 days later

            Howdy! Could someone please help me out with this question:

            The period of revolution of the planet Saturn around the Sun is 30 times that of Earth. Determine how many times further Saturn is from the Sun than Earth.
            A) 3.1
            B) 5.5
            C) 9.7
            D) 30

            The answer is C but I have not clue how they got there. The marking scheme stated the T2/r3 = 4pi2/GM formula.

            -jinx_58

              7 days later

              DumbNerd

              Ayyyyy congrats dude!! Was this for the research investigation?

              -jinx_58

                2 months later

                Hii, am I still able to ask questions on this thread? If so, is it possible if I get feedback throughout my student experiment (and research question if possible) for physics (when we start working on it)? We are usually put in the same groups, but the group I has is way smarter than me, like they get 19 out of 20s, while I suffer with a 15 out of 20, but I'd really like to get better grades at least above an 18 this time?

                  Bibliii
                  Hey Bibliii,

                  You can certainly ask questions on any of the threads in the forum and definitely in this one (as long as its physics related 😆). If you mean feedback from your teacher, you should most likely be able to get feedback for certain sections of your assignment if you ask your teacher nicely. Our teachers didn't really; it was more like answering questions for us. However, I would imagine your teacher can't help you every step of the way with your assignment.
                  On here, though, feel free to post any questions, or sections of your assignment to receive feedback. Just like everyone else, I would be more than happy to assist you in providing feedback.

                  Hope that helps!

                  • PP

                      PhytoPlankton ahhh thank you so much. No I was just wondering if I could post and get help here, because my teacher constantly singles me out as I am not doing very well in physics (I average to below a C) and I'd really like to prove to myself and to her that I am better than that. She never gives me feedback, and when she does it's too complex or too simple and not enough. I try to work very hard, but it's never enough, so yeah any help from anyone except her is much appreciated!

                          Bibliii
                          All good and yeah, that does sound like a pain. You certainly can get feedback and help here whenever you need it. I have created a thread for urgent help for external exams but I will also create another one for urgent questions if you have a question the day before an assessment is due as well.

                          There'll be people around to help.

                          • PP

                              Hiii,

                              Could anyone please explain the right hand rule for electromagnetism. Also what does conventional current mean (is it the positive to negative or something like that is flippity flopped?)

                              Thank youu

                              • God replied to this.

                                Bibliii

                                Hi Bibliii,

                                Conventional current is what we use to describe most circuits. It is the flow of charge (specifically positive charge).

                                In chemistry, you view current as the flow of electrons. But because electrons are negatively charged, and old science people were stupid and thought they were positive, it is in the opposite direction.

                                All u need to know is that conventional current flows from positive + to negative -!

                                Where as the electrons flow from negative to positive.

                                2) In terms of the ‘right hand rule’ there are two main ones.

                                • Magnetic Force on a moving charged particle.
                                  Thumb in direction of current (direction the + charge is moving), fingers in direction of magnetic field, and ur palm shows the direction of the force.

                                If it’s an electron, which is negative, u point ur thumb in the opposite direction to the electrons movement.

                                • Magnetic Field from a wire.
                                  Thumb in direction of current. Curl fingers like a fist. Looking at it from the pinky end shows which way the magnetic field runs (clockwise/anticlockwise)

                                There are two more, one for Lenz’s law: which is finding which direction the current must flow when a coil of wire is moved in a magnetic field. And one for finding the north/South Pole of a coil of wire (solenoid). But u can also use the magnetic field one instead, it just hurts ur head a bit more.

                                Hope this helps,
                                -G

                                    Hiii, I finally got drive to work so now I can share images.

                                    These are my physics homework questions, that I cannot do for the life of me (because content goes too fast, and my teacher loves to single me out because im the slowest learner in the class and because she is completely racist). I attempted drawing on the worksheet (question 1) it has diagrams and isn't one of the Pearson's questions. I can't answer any though, because I am so bad at physics right now. And my tutor didn't give me any notice before telling me that she couldn't tutor any more (though she has a new job, so good for her ig). But yeah, I am quite literally freaking out and there are so many questions, not too mention whole entire chapters to read. So yeah, life's been a bit hectic.

                                    If any of you could help by even answering just one question, you would be a lifesaver. Thanks, 🙂

                                      Bibliii
                                      Thanks @jinx_58 for your reply!

                                      Hey Biblii,
                                      Here is the link to the solutions for the rest of your questions in the last four images (I've combined the 8.1&8.2 Review questions and I combined the physics WS p1&2): https://imgur.com/a/JSg6pso.

                                      Sorry for my messy handwriting and image drawings - I was doing this in a hurry 😅. Nevertheless, hope this helps and as always, feel free to ask more questions.

                                      • PP

                                      EDIT: now that I quickly check over my workings, I notice there are a few spelling and grammar issues. Just try and ignore them - sorry!

                                          PhytoPlankton and jinx_58

                                          Hii, first of all, thank you for responding to this faster than my teacher has ever (I panicked and sent her an email saying I was sorry if I hadn't completed the homework). I just wanted to clarify a few things with the questions.

                                          For question 3 on 8.1 review, the answer you wrote was the "north pole of the magnet will point as geographic north which is the magnetic south pole". Does that mean that the magnet is facing magnetic south pole (the north part at least)? Sorry, I'm just a bit confused. Also with the calculations for all the answers that involved actual maths, it's just subbing in information into the formula and then just using ratios sometimes?

                                          For 8.2 review wouldn't question 5 and 6's answers be switched because A is closer to LHS which is west (for question 5), or is my brain just disintegrating.

                                          For the worksheet, (d) Aluminium metal is not affected by a magnet. Can an aluminium wire create a magnetic field? The answer would be no, wouldn't it. Because magnets only work in magnetic fields, right?

                                          Thank you both so much for answering those questions, you all will now be given the "saved my butt award".

                                          P.S. PhytoPlankton your handwriting is literally so neat, so umm not sure what you're talking about haha. Nevertheless thank youuu to both of you guys!!

                                                Bibliii
                                                For question 3 on the 8.1 Review, there’s this concept that the geographic North Pole - where Santa supposedly lives - is scientifically a South Pole. This is because the geographic North Pole attracts other magnetic North Poles.

                                                I hope this diagram helps: https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSqTPohiHrQQezAvOsUd-BBOOAuaK1PDzBIOw&usqp=CAU

                                                Idk if that makes sense but feel free to ask more questions.

                                                Also with the “magnets only work in magnet fields” thing, that not how it works. A magnet creates its own magnetic field. Every single one. So, because the Earth is a giant bar magnet, it creates it own magnetic field.

                                                However, if aluminium wire has a current flowing through it, a magnetic field is present. Any wire with an electric current creates a magnetic field. Check out the syllabus and the syllabus glossary, it really helps to see what QCAA actually want lol.

                                                -jinx_58