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graphicer89
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Homework Statement
A) A tuning fork is struck in dry air. Then it is struck in moist air. Under whch conditions do the sound waves from the tuning fork move more quickly?
B) No matter what the temperature if the air, the frequency produced by a tuning fork remains the same. Would the wave length produced by the tuning fork be longer in dry air
or moist air? Why?...
Homework Equations
None i guess...
The Attempt at a Solution
A) My guess is that it would move faster in dry air.
B) I would say that the wavelengths are longer in moist air because the moist air acts like a resistance no? making the waves go slower thus increasing the wavelength...i looked every where and i just can not find anything on this...please help me out...whats the physics here involved?
These are extra questions and i just need help zoning in on the answers...please help me out if you desire...
20) When blue light strikes an opaque object whose resonant frequency is lower than the frequency of blue light what happes?
A) The amplitude of the vibrations of the electrons in the glass becomes larger
B) The object becomes warm
C) The blue light is absorbed without reemission
D) The blue light is reflected by the electrons in the object
E) The blue light is transmitted throught the object
(For 20 i know the answers ARE NOT A,B, and E...leaving C and D...but i don't know which one could fit in the answer...please help me out...)
15) When blue light strikes an opaque object whose resonant frequency is the same as the frequency of the blue light what happens? ( Choose as many as apply)
A) The amplitude of the vibrations of the electrons in the glass becomes larger
B) The object becomes warm
C) The blue light is absorbed without reemission
D) The blue light is reflected by the glass
E) The blue light is transmitted throught the glass
(for 15 i know the answers ARE NOT E...I know the Answer is B and C but what about A and C? Do they apply??
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