Recent content by f3sicA_A

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    Other Recommended work for an undergrad (internships, research, etc.)

    Partially because as I have mentioned in the question, I am really not sure what work 'interests' me, I'm open to any field in Physics as long as it's a valuable learning experience, and of course, whilst learning, I also want to ensure I have something to show for my experience/knowledge when...
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    Other Recommended work for an undergrad (internships, research, etc.)

    I am a second year undergrad pursuing Physics and my primary question is when looking for work (internships, research work, etc.) is it recommended to apply for formal programs and fellowships (say research fellowships, summer/winter schools at good institutions, etc.) as opposed to say reaching...
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    How to define vectors in spherical coordinate system?

    I am extremely confused with how to represent vectors that do not start at the origin in spherical coordinate system. If they did start at the origin, the vector to any point is simply ##r\pmb{\hat{r}}##; however, what if it does not start at the origin as in the question above? One thing I can...
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    Consideration of number of significant figures in experimental quantities

    I don't see anything wrong with it, but my professor mentions that I need to round of the uncertainty in time to keep consistent with significant figures and decimal places. For instance, let us say I have a length measure of 22.1 cm and a time measure of 0.569824 s (just arbitrary values), then...
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    Consideration of number of significant figures in experimental quantities

    I am not sure how to approach this problem. I know that there really is no use taking time values accurate up to the sixth decimal place if my length values are accurate only to the first decimal place, after all errors should be comparable. So I wanted to know how I should quote my time values...
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    Why is the thrust equation same under gravitational force?

    Whilst your analogy now makes sense, that is only because I have been able to make sense of the math which proves that irrespective of whether gravitational force acts on the rocket or not, which I initially couldn't, and hence this thread. However, now that I have worked through the problem as...
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    Why is the thrust equation same under gravitational force?

    I see, I will try to derive the thrust equation again whilst considering the force of gravitation. Thank you for your response!
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    Why is the thrust equation same under gravitational force?

    Right, my question is simply that how do we know that the magnitude of the thrust force is given by ##T=-\dot{m}v_\mathrm{ex}##. As far as my understanding goes, this equation for the magnitude of thrust force is derived by assuming that there is no gravitational force acting on the rocket (as...
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    Why is the thrust equation same under gravitational force?

    My apologies, I should have mentioned that the problem does not provide a numerical value for the exhaust speed of the gaseous fuel the rocket ejects; however, it requires us to assume that the value is a constant ##v_\mathrm{ex}##. I do not see the need for bringing in impulse when momentum...
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    Why is the thrust equation same under gravitational force?

    The homework statement isn't exactly as is mentioned above. The actual problem statement is as follows: This is problem 3.8 from John R. Taylor's Classical Mechanics; however, my question is not related to the main problem itself but one particular aspect of it. Now, in the same textbook (John...
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    Programs What is an appropriate way of asking a professor for a project?

    Thank you for the advice! What I was unsure of for the most part was whether it would appropriate for an undergrad like me to expect a professor to guide me to this extent, especially given how busy professors are usually; however, I suppose going in with a blank mind not 'expecting' a...
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    Programs What is an appropriate way of asking a professor for a project?

    The institution I study at is a Liberal Arts institution rather than a research or tech based institution; irrespective, the Physics faculty at my institution is highly reputed throughout my country (especially the senior professors). Some of the professors do not engage in research and purely...
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    Programs What is an appropriate way of asking a professor for a project?

    I am an undergraduate Physics student who will just be going to his second year right now. Currently, my summer break is going on and I am interning under the guidance of an Astrophysics professor at a reputed (graduate-level) institute in my country, and I am working on an interesting project...
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    Vertical projectile motion with quadratic drag (sign convention)

    I realized where I made the mistake in signs, and now find it quite silly. I thank you for pointing that out.
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    Vertical projectile motion with quadratic drag (sign convention)

    Thank you for your response! I am not sure which equations you are referring to, but I am guessing, I have made a mistake in the following equations: $$m\dot{v}=-mg-cv^2$$ $$-mg+cv^2=0$$ I realize that I have changed the signs here; however, my logic behind this is that the in the first...
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