Recent content by rchenkl

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    How Do You Calculate Tension in a String with Mass and Acceleration?

    Homework Statement A string is attached to a mass and a pulley at the top end and the mass is free to move and descends with a constant acceleration, a. By applying Newton's Laws to mass m, find an expression for the tension in the string, in terms of m, a and the acceleration due to gravity...
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    What Are the Core Postulates of Einstein's Special Theory of Relativity?

    So for example, one person is doing an experiment and obtained a result at stationary. Another person is traveling at a speed and do the same experiment. They will obtain the same results regardless the frame they are in. Is that a correct derivation from the first postulate?
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    How Do You Calculate State Changes in a Monatomic Gas Thermodynamic Cycle?

    Homework Statement Five moles of an ideal monotomic gas initially occupies a volume of 100 x 10-3m3 at a temperature of 280 K. (state 1) The gas is then subject to the following processes in sequence: * heated at constant volume to a temperature of 600K (state 2) * allowed to expand...
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    Graduate Significance of Special Relativity

    Thanks CompuChip. I didn't understand it quite well before either.
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    What Are the Core Postulates of Einstein's Special Theory of Relativity?

    Can I say the physics law in any inertial frame is independent? So when I do an experiment (say measuring the mass of a sphere) on a inertial frame, will be the same as what I do in another inertial frame. Is that correct?
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    What Are the Core Postulates of Einstein's Special Theory of Relativity?

    Homework Statement State two postulate that underlie the Special Theory of Relativity The Attempt at a Solution From the notes I have from the lecturer. It says: The principle of relativity: The laws of physics must be the same in all inertial reference frame. The constancy of the speed...
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    Fundamental Frequency of nylon string

    Sorry to cause confusing there. The two frequencies provided was supposed to be 225 Hz and 300 Hz. Not 330 Hz for the second one.
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    Fundamental Frequency of nylon string

    Thank u ! :D
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    Fundamental Frequency of nylon string

    Ohh ! I got it! Because the Nth frequency is the n*fundamental frequency! Is that right?
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    Fundamental Frequency of nylon string

    So is it 225Hz=nf1 and 300Hz=(n+1)f1 ? through my calculations... So f1=300-225?
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    Fundamental Frequency of nylon string

    fn=nv/2L So is it when n=1 its the first harmonic? And its the fundamental frequency? I'm not sure very sure...
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    Fundamental Frequency of nylon string

    Fundamental Frequency! [SOLVED] A nylon string is stretched between fixed supports 0.75m apart. Experimental plucking of the string shows that several standing waves can exist on the string. Two such standing waves have frequencies of 225Hz and 300Hz with no other frequencies in between. Q1...