Recent content by graphene

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    Nerdy Pick-up Lines: Impress Chicks with Your Knowledge

    hey, are you made up of barium and beryllium? Cause, you're a total BaBe.
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    How can I stay focused for 30 minutes while reading?

    what are these 'something else's ? get rid of them, keep them aside.
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    Most exciting areas of research in Physics?

    all all
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    De Broglie wavelength of electron in first Bohr orbit

    You've been given the energy. Use it to find momentum. & then calculate wavelength from the momentum.
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    Interaction Hamiltonian for two coupled oscillators

    yes. yes.
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    Are You Nerdier Than Half the Population?

    lol. I am by far the SUPREME NERD GOD! All hail the monstrous nerd. 5% scored higher (more nerdy), 0% scored the same, and 95% scored lower (less nerdy).
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    Electric field inside a solid charged metal rod

    it is a metal rod. so all the charge would reside on the surface only, none can stay in the bulk. so the field inside the rod is zero.
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    How Long Can You Go Without Sleep?

    72hr is insane. i am surprised you can actually sit in front of your comp & make this post. i think I've exceeded 24hr a couple of times and it gets really bad. i feel exhausted but just don't fall asleep or maybe sleep for 2hr and wake up! quite crazy, i don't understand why that happens. on...
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    Balancing high school STEM subjects with personal interests

    hey, we share this aspect. i don't quite think people may want to know how long i go w/o a bath or change clothes. :-p i live in the tropics. back to the topic, apathy, weekends are great time to make up, if you run short of time during the week. try to enjoy doing the stuff you want to do...
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    Interaction Hamiltonian for two coupled oscillators

    H_A contains a derivative. H_int contains a polynomial. Do you think they can commute? You can work it out. If H_A and H_int commute, and that the total hamiltonian is their sum, you can find common eigenstates between H_A and H_int. Else, no, you'll have to solve the complete hamiltonian.
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    Will the Arctic Cold Front Cause Severe Weather and Damage to Crops?

    31C/15C (= 87F/59F) its getting hot :(
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    Calculating Wavelength of Emitted Radiation in Carbon Monoxide Molecule

    yes, l=0 is the ground state & l=1 is the excited state.
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    The placing of charges in electrostatics

    pal, what i told you previously wasnt quite the ideal way to solve it. sry. First, get the force on the third charge to be zero. From this equation, you can find out r. The equation does not involve n. Next consider one of the outer charges. Put in the value of r, and you will have an equation...
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    What happens to excess voltage when a 9V source powers a 6V light bulb in series?

    What do you mean when you say that a light bulb is designed for 6V ?
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    How does pendulum height relate to length when impacted by a bullet?

    do u mean the bullet has an energy of mg*14 ?
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