Herman Trivilino's latest activity
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Herman Trivilino reacted to Baluncore's post in the thread Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones with
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The third harmonic, at 3f, is the perfect fifth, in the octave above the fundamental. If you refer 3f to the octave it falls in, then... -
Herman Trivilino replied to the thread High School Using "symmetry" to deduce final velocities of two colliding particles.If you swap ##m_1## with ##m_2## in the expressions for the final velocities those expressions will be unchanged. Note the grammatical...
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Herman Trivilino replied to the thread Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones.Ideally, the microphone should be very close to the opening in the pipe. Blow softly (don't "overblow") in an anechoic environment. I...
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Herman Trivilino replied to the thread Undergrad Measured Spectrum of Stopped Wood Organ Pipe Shows ALL Overtones.Language of course differs. But I have always seen the language used in the following way: For a closed pipe the first overtone, for...
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Herman Trivilino replied to the thread Undergrad Why is the Lorentz Force always perpendicular to velocity?.Whether you call it the Lorentz force or the magnetic force is just a naming convention. But the fact that it's perpendicular to the...
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Herman Trivilino replied to the thread Looking for lab experiments for a High School Physics class.Who's in charge? Skills are something that they are taught, in this case by a teacher. Allowing them to do only what they "care" to do...
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What if you are deriving a general solution, not just for specific numbers? There is nothing to guess then, because some forces could...
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Herman Trivilino replied to the thread A very simple moments question.Because in problems like this we assume the rod is rigid. That is, it won’t bend. Due to ##\vec{D}## or any other force.
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Herman Trivilino replied to the thread A very simple moments question.It's an equilibrium situation so all the forces are "balanced" by other forces. That's what it means to have a net force of zero. Do...
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Herman Trivilino reacted to Steve4Physics's post in the thread A very simple moments question with Like.
Pre-retirement I marked physics exam' papers for Edexcel (and for others). Occasionally examination questions are found to be...
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Herman Trivilino replied to the thread High School Understanding Newton's Third Law and the Net Force on Objects.Suppose you have the following three forces, all measured in the same units: ##7 \hat{i}, -4 \hat{i}, -3 \hat{i}##. They all lie along...
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Herman Trivilino replied to the thread High School Understanding Newton's Third Law and the Net Force on Objects.Even in one dimension you can have three forces adding to zero. It wouldn't make sense to say that they are equal and opposite.
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Herman Trivilino replied to the thread Finding proper value for centripetal acceleration in a plane rising up.True. But the problem implies that it's a coordinate acceleration of ##6g## in this particular scenario that causes the blackout. So...
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Herman Trivilino replied to the thread Finding proper value for centripetal acceleration in a plane rising up.If you have an upward force that would create an upward acceleration of magnitude ##7g## and a downward force that would create a...
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Herman Trivilino replied to the thread What did you do with your old college textbooks?.Ha ha. Good one. By then Dirac's formalism may be front and center. Or it could be an old dead end. Or anything in between.