Lnewqban's latest activity
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Lnewqban reacted to Baluncore's post in the thread I Question about the absorption of heat based on color with
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Three different parts of the spectrum need to be considered. 1. Ultraviolet, UV. 2. Visible light colour. 3. Infrared, heat, IR. The... -
Lnewqban replied to the thread Belt C-C distance to Tension.Welcome! What makes you believe that a relation exists between those two parameters? The C-C distance is determined by the internal...
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Lnewqban reacted to Steve4Physics's post in the thread Chain falling out of a horizontal tube onto a table with Like.
@NTesla, the last part of the question on the screenshot is missing. So here’s what (I believe) it should say: "... At a certain...
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Lnewqban replied to the thread Cone Rolling on Conical Surface Dynamics.Welcome! I would consider cone A as a wheel of mass m rolling over cone B keeping radius l and rotating at constant angular velocity...
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https://www.cidrap.umn.edu/covid-19/new-coronavirus-subspecies-sars-cov-2-mutation-discovered-brazilian-bat Gizmodo published an...
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Lnewqban reacted to boneh3ad's post in the thread Aero/Hydro-dynamic Streamlining as a function of medium with Like.
The weights and balances/mass properties part of this that @DaveC426913 suggested are really the best answer. The actual most efficient...
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Lnewqban reacted to Baluncore's post in the thread Aero/Hydro-dynamic Streamlining as a function of medium with Like.
I disagree. Aircraft have a sharp edge convergence at the rear to reduce wake and drag. They also have a blunt or spherical nose, where...
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Lnewqban replied to the thread A Please Explain Elementary Physics Elevator Question.Without the interference of the elevator, that person would be freely falling. That interference can be minimum if the cables break, or...
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Thank you very much for all the explanations Lnewqban, Gavran, haruspex, Steve4Physics
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Lnewqban replied to the thread Speed of moth related to Doppler Effect.Both, the stationary bat and the moving moth, receive sound of the same frequency. That common frequency is greater than the frequency...
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Lnewqban replied to the thread I Ramjet effect on drone.Please, see:
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Lnewqban reacted to songoku's post in the thread Correct statement about a reservoir with an outlet pipe with Like.
Thank you very much for all the help and explanation kuruman, jbriggs444, Lnewqban, Herman Trivilino, Gavran, haruspex
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Lnewqban reacted to songoku's post in the thread Correct statement about a reservoir with an outlet pipe with Like.
When te straw is lifted, water level inside the straw will decrease causing the volume occupied by the air increases ans reducing the...
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Lnewqban replied to the thread B Basic thermal energy transfer physics: Insulation value in open airways vs sealed airways.Welcome @dacad Please, see: https://www.engineeringtoolbox.com/convective-heat-transfer-d_430.html
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Lnewqban replied to the thread Struggling to make relation between elastic force and height.The pulling force of each person and the tension force along the whole nylon string must be the same for each instant. In this specific...