Recent content by san203

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    Undergrad Is it necessary to have a formula to define a function?

    Sorry if i didn't express myself clearly but by those "quantitative Factors" i meant not the type of relation , i.e. b/w numbers or letters or anything but the number of such ordered pair connected through that relation. I didnt mean to. Sorry again. Although i completely understand what...
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    Undergrad Is it necessary to have a formula to define a function?

    I have actually gone through those articles. I have read a few books and top 10 results on google but those repeat the same definition. "Function is a device. Insert Input get output." My questions is a bit different.
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    Undergrad Is it necessary to have a formula to define a function?

    i realize there is a similar thread here But the questions are not the same. 1.)Function is a relation but i don't know what relation exactly means. Its supposed to be a condition associating two objects but also takes in the quantitative factor in maths? 2.)Anyways, functions can be defined...
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    Undergrad Is a Sine Wave Defined by Its Physical Shape or Graph Representation?

    Is Sine Wave just a graph of particles that do SHM? A wave on a string is also a Sine wave provided its particles are moving sinusoidally. But its shape also kind of represents a sine wave. So is the wave on a string called a sine wave because of the physical shape that we can see or because...
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    Undergrad Work Done per Unit Charge vs Current

    1.) I seem to have found out the answer to my problems after reading a few books. Summary - I have learned that in an electrical circuit, the battery isn't the only source of charges. The electric field by the charges at the terminals first creates an intermediate electric field which in...
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    Undergrad Work Done per Unit Charge vs Current

    @Phillip Wood i didnt get you? are you asking about my findings to the question? I have another question. Consider a simple circuit with a battery and a resistance. i have - as mentioned in my previous post - always thought that the potential of a charge carrier drops as it goes across the...
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    Undergrad Work Done per Unit Charge vs Current

    But again the answer is about moving electrons faster. How does moving electron faster = increase in current, unless of course the no of electrons crossing the area in some time interval increases. I see. I have read replies to similar threads. What these replies always stress on is that...
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    Undergrad Work Done per Unit Charge vs Current

    A trivial question. I know that current is the amount of charge passing per unit time across a area. And Potential difference is change in potential or change in potential energy per unit charge or work done per unit charge. And also from Ohms law, V is directly proportional to I. So...
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    Undergrad Electric Field Propogation in LIGHT

    It makes sense when i read it from textbook or from your answers, but what troubles me is imagining electric fields moving.Can i think of it as being constantly generated from the source and from the changing electric and magnetic field which in turn induce each other? If we have a varying...
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    Undergrad Electric Field Propogation in LIGHT

    Hello. I started studying wave optics a while back and here is my first question From what i understand, electric field is a region where charged particles feel the coulomb forces. And light is basically time varying magnetic and electric waves being propagated in some medium or vacuum...
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    High School What's the Difference Between a Position and a Position Vector?

    This really went over my head, but when i do learn things like this i'll try to keep what you said in mind.
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    High School What's the Difference Between a Position and a Position Vector?

    But isn't position in plane also calculated relative to origin? Sorry. I didnt understand that at all. Edit#2 : Thanks. Your answers were right i guess.
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    High School What's the Difference Between a Position and a Position Vector?

    What is a position vector? Is their any difference between the position vector and position? Isnt position of a point supposed to represent its direction in Cartesian plane as well(Positive quadrants , negative quadrants). So why two different terms?
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    Other Becoming an Engineer: Considerations and Personal Experiences

    Hello I am currently in High school and am currently studying/preparing for engineering entrance exams which I'll have to write in less than 6 months. I want to be an engineer no doubt, but i am also equally inclined towards Physics. i.) So if i succeed in completing my B tech in Mech engg then...
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    Undergrad Magnetic field due to current in straight wire(Biot-Savarts)

    I seemed to have overlooked that part. Maybe i am not thorough with the basics. So, i guess a small circuit element is able to exert magnetic field at every point in its plane and that magnetic field is perpendicular the plane?