• Sound Problem?

    Your answer: 
    When determining the speed of sound using a glass column, a column of water, and a tuning fork, we used 2 adjacent resonant points and found the difference in air column length between the 2 points. Why did we do this instead of just using 1 resonant point?
    1 hour ago
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  • What is the path of the light on a paper?

    Your answer: 
    2 hours ago
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  • Why does lightning strike trees or any tall objects??? what's the main reason for that??

    Your answer: 
    I heard that lightning is produced when negative charges of clouds coming down to ground & positive charges of ground going upward connect with each other...If this is true then how come most of the time lightning only strikes trees or any tall objects??? why not car, house or surface where there's nothing (no trees, house or buildings) ???
    6 hours ago
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  • Is this a good definition for work in physics "ENERGY TRANSFER VIA A FORCE"?

    Your answer: 
    I just sum it up in my own words, I know the formula and understand it. W = Fd.
    6 hours ago
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  • AIUTO PROBLEMA FISICA URGENTE??

    Your answer: 
    Mi aiutate a risolvere questo problema? Non riesco a capire dove sbaglio: In figura sono mostrate le forze che agiscono su di una cassa facendola scivolare verso destra su di un piano senza attrito F1= 2.4N e F2=4.1 orientata in maniera da formare con il piano un angolo di 60 gradi. Se la velocità in un certo istante è pari a 2.8 m/s qual è la... show more
    7 hours ago
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  • Which person is stronger?

    Your answer: 
    Two people are pushing each other head-on on tile floor. They are even mostly no one gaining ground. One is on bare feet the other has sock on. The sock person slips back alittle. Who is stronger
    11 hours ago
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  • How exactly do time loops work?

    Your answer: 
    E.g. in movies like Groundhog Day. Like does it affect the whole world, or just the one person? If it's the former, does that mean whenever the person wakes up, the whole world just starts again from where the day started? If it's the latter, does that mean whenever the person wakes up, a new parallel timeline is created? And what... show more
    16 hours ago
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  • Electromagnetism?

    Your answer: 
    A large electromagnet is to be used to generate the required 𝑩⃑⃑ -field in a mass spectrometer device. The parallel plates that make up the velocity selector portion of the device have an electric field strength of 𝜀 = 345 N/C, while the accelerating plates (10 sets in total) have a strength 𝜀 = 265 N/C and each have a separation of 5.00... show more
    19 hours ago
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  • Fields question?

    Your answer: 
    An alpha particle with a charge of 2e is fixed at the origin. A proton is placed 2.00 cm from the alpha particle and released. The proton travels 2.00 m before exiting into a uniform magnetic field region where the electric field from the alpha particle is shielded. a) How fast is the proton moving just before it enters the magnetic field region? b)... show more
    19 hours ago
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  • Why a Dirac field not coupled to the electromagnetic field has however the same conserved current of the QED?

    Your answer: 
    the local conservation of the charge, the continuity equation derives from the global phase invariance. Why ?
    19 hours ago
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  • !!!! Interference of sound waves sound?

    Your answer: 
    two speakers, A and B, produce identical sound waves. a listener is 3.20 m from speaker A. the listener finds the lowest frequency that creates destructive interference at his location is 72.4 Hz. how far away is he from speaker B?(Unit=m)
    19 hours ago
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  • Dear atheists, explain why is the earth flat and evolution not real. Also, is time travel possible?

    Your answer: 
    But before you answer I just wanted to let you know that my question clearly isn’t the archetype question for people on the science/math category on ya. No, not at all! Because lack of evidence alone totally isn’t what justifies atheism and bringing up flat earth and evolution is totally necessary and relevant. Everyone knows that lack of evidence... show more
    20 hours ago
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