Un niño juega con un conejo en el parque, en un momento el conejo se aleja del niño en línea recta una distancia de 200 m en 15 s y luego regresa recorriendo dos tercios de la distancia en 10 s. Calcular: la velocidad media y rapidez media detodo elrecorrido.

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

In a good thermo flask the main cause of heat loss is

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter