A piece of corroded metal alloy was found in a submerged ocean vessel. It was estimated that the original area of the plate was 800cm^2 and that approximately 7.6kg had corroded away during the submersion. Assuming a corrosion penetration rate or 4 mm/yr, estimate the time of submersion in years. The density of the alloy is 4.5g/cm^3.

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

What are the theoretical properties of a gas at a temperature of 0 kelvin?

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