Sabiendo que la velocidad del sonido en el aire es de 340 m/s a 20°C, encuentre la longitud de onda del sonido Que emite un diapasón que tiene la frecuencia de 400 Hz. Recuerde que Hz = ciclos/seg.

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An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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?

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?