The drawings show three situations in which a positively charged particle is moving through a uniform magnetic field b with a velocity v. for each situation, what is the direction of the magnetic force f exerted on the particle?

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

Why don't you see your reflection in water with waves or repples

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.