Un volante de 50 cm de radio gira a 180 rpm. Si es frenado y se detiene en 20 segundos, calcula: a) la velocidad angular inicial en radianes por segundo, b) la aceleración de frenado, c) el número de vueltas dadas en 20 segundos

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

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

Which of the following are appropriate acceleration units?