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The speed of sound in air at 20°C is 344 m/s.
(a) What is the wavelength of a sound wave with a frequency of 196 Hz, corresponding to the note G3 on a piano?
___m
(b) How many milliseconds does each vibration take?
____ms
(c) What is the wavelength of a sound wave one octave higher than the note in part (a)?
____m
Determine the proper length of the rod clamped at the middle for a frequency of 20 kcps if the modulus of elasticity and density are given.
A toy train with 1.2kg mass is moving at a stright line platform with the velocity 12m/s. It collides another toy train of 0.9kg mass with velocity of 7m/s. If e = 0.8, what is the velocity of each train after the collision.
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