06/20/24

waves and sound
An audio speaker producing a steady sound at an outdoor concert is 40 ft away from you. If you move to a position where the speaker is 63 ft distant, by what factor will the amplitude of the sound... more
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09/06/23

formation of rainbows
How does the formation of rainbows relate to the refraction and dispersion of light?
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09/06/23

Enter the answer to the correct number of significant figures for this calculation, using the rules for significant figures. 3.82193 + 10.5861 = 14.40803
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02/11/23

Find the answers
Suppose that a rancher is build pens along a river so no fencing is needed along the river but wants 3 sections as shown. Find the length y that will maximize the area if the rancher has 6,548 feet... more
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02/09/23

What is the size of the smallest feature observable in human tissue when examined with 10-MHz  ultrasound?
Ultrasound probes can resolve structural details with sizes approximately equal to the wavelength of the ultrasound waves themselves. What is the size of the smallest feature observable in human... more
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