Amaterial that can easily flow is called a
a. fluid.
b. solid.
c. buoyant force.
d. hydraulic material.

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

This is the number of complete movements of a wave per second.