Calcula la fuerza que debe aplicarse al embolo mayor de un gato hidráulico que necesita levantar un auto de 1.8 toneladas, si las áreas del embolo menor y mayor son de 5cm2 y 200cm2 respectivamente. Calcula el área del embolo menor de una prensa hidráulica si se le aplica una fuerza de 70N y puede levantar un peso de 20 000N en su embolo mayor, cuya área es de 400m2

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.