Atuning fork with frequency 440 hz is held just above the top of a uniform tube containing water. the tuning fork can excite sound waves in the air above the water and in the tube. the water level can be changed by a spigot at the bottom of the tube. as the water drains out, standing waves are excited when the air column has a length of 0.600 m and again at 1.00 m. use this data to calculate the speed of sound in the air column above the water.

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.