The two cars are in contact for 0.32 s. Calculate the average force of car B on car A. State its direction Car A = 450kg
initial v is 4.50m/s
final v is 3.62m/s

Car B = 550kg
initial v is 3.70m/s
final v is 4.42m/s

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

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

An object's buoyant force and weight mean the same thing.a. trueb. false