ayudaaa urgent confio en ustedesss : ruido del motor de un auto de fórmula 1, tiene una frecuencia de 570 hz. Si un observador lo ve acercarse en la recta del circuito a 252 km/h, ¿con qué frecuencia lo percibirá? a) 647 hz b) 697 hz c) 718 hz d) ninguna

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.