Un candidato a la presidencia de la república de Colombia, tiene un debate con los jóvenes de las
universidades públicas. Para esto utiliza unos
amplificadores de sonido, ya que se encuentra en
campo abierto y su voz no se propaga con facilidad.
¿Qué fenómeno sustenta el funcionamiento de los
amplificadores? ¿Por qué?
Ayuda por fa

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Which articulations allow for greatest range of motion?