Physics, 04.04.2020 12:58 lizzidubois
When you play piano, why might you have to hit the keys harder with your left hand (lower notes) than your right hand (higher notes) to make them sound the same volume? A. High-frequency sounds are less condensed, making them sound softer. B. The audibility threshold curve is lower for low-frequency sounds and higher for high-frequency sounds. C. Low-frequency sounds are more condensed, making them sound louder. D. Higher-frequency tones require higher dB levels to sound the same volume as lower-frequency tones. E. Lower-frequency tones require higher dB levels to sound the same volume as higher-frequency tones.
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Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?
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When you play piano, why might you have to hit the keys harder with your left hand (lower notes) tha...
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