Physics, 03.09.2021 18:30 abbygailgo674
51. Tres trabajadores levantan un piano de 3.50 kN con rapidez constante hasta un departamento a 25.0 m arriba de la calle utilizando un sistema de polea sujeto al techo del edificio. Cada trabajador puede suminis- trar 165 W de potencia y el sistema de polea es 75% efi- ciente (de manera que 25% de la energía mecánica se pierde debido a la fricción en la polea). Ignorando la masa de la polea, encuentre el tiempo requerido para subir el piano desde la calle al departamento.
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Physics, 22.06.2019 06:00
When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.
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Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
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51. Tres trabajadores levantan un piano de 3.50 kN con rapidez constante hasta un departamento a 25....
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