Una persona se encuentra entrenando para una carrera, corre a lo largo de una línea recta con una rapidez constante. Activa el cronometro cuando pasa por un punto conocido y lo detiene cuando pasa por otro punto a 20 m de distancia. El intervalo de tiempo que indica el cronometro es 4.0 s. a) Determine la velocidad en la que corre la persona. b) Si la persona continúa su movimiento después de desactivar el cronómetro ¿cuál es su posición transcurridos 10 s

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

The two required components for a generator