A216-m-wide river flows due east at a uniform speed of 2.2 m/s. a boat with speed of 7.9 m/s relative to the water leaves the south bank of the river pointed in a direction 34 degrees west of north. what is the magnitude of the boat's velocity relative to the ground (in m/s)

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

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

Positive ions differ from neutral atoms in that