Could you please help me with this problem?
Light coming from an underwater source emerges from the surface in a circle. If the water is 1.0 m deep and its index of refraction is 1.333, how big is this circle of light?
Is this related to refraction of light? If so, how could I possibly...
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(1) What is the difference betweem plucking a guitar with a hard pick and plucking it with bare fingertips? What could be the reason behind this?
(2) The bass strings in a grand piano are longer than the strings in the treble range. Why?
Please help me! I got stuck on this problem:
(1) A ball is dropped from rest, and after t seconds its velocity is v ft/sec. Neglecting air resistance, show that the average velocity during the first T/2 seconds is 1/3 of the average velocity during the next T/2 seconds.
Will I integrate v? If...
(1) Toy telephones are constructed by connecting 2 plastic cups with a long string. How does sound transmission occurs when the string is pulled taut from one cup to the other?
(2) How does a stethoscope works? Through what medium does sound travel?