Physics Archive: Questions from May 20, 2023
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A 5.0 cm high object is placed 37.5 cm from a convergent lens. On a white screen you can see a real image of the object 25.3 cm from the lens. Estimate the focal length of the lens.
Un objeto de \( 5.0 \mathrm{~cm} \) de altura se coloca a \( 37.5 \mathrm{~cm} \) de un lente convergente. En una pantalla blanca se observa una imagen real del objeto a \( 25.3 \mathrm{~cm} \) del le2 answers -
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If the circuit resistance is 500 2 then the capacitance should be approximately (A) 1.0 µF Select one: O A ов B O C OD OE (B) 4.6 µF (C) 7 uF (D) 9.8 µF (E) 14.2 µF
Si la resistencia del circuito es \( 500 \Omega \) entonces la capacitancia debe ser aproximadamente (A) \( 1.0 \mu \mathrm{F} \) (B) \( 4.6 \mu \mathrm{F} \) (C) \( 7 \mu \mathrm{F} \) (D) \( 9.8 \mu0 answers -
An initially discharged 85.0 µF capacitor is connected in series to a 10 k resistor and a 10.0 V source. Determine how long it takes for the capacitor to charge to 99.9% of its capacity. Select one:
Un capacitor de \( 85.0 \mu \mathrm{F} \) inicialmente descargado se conecta en serie a un resistor de \( 10 \mathrm{k} \Omega \) y a una fuente de \( 10.0 \mathrm{~V} \). Determine cuanto tiempo se t2 answers -
A student wants to determine the refractive index of a fluid contained in a semicircular cell. In an attempt made, it is determined that the angle of incidence is 30.0° and the angle of refraction is
Una estudiante quiere determinar el Ãndice de refracción de un fluido contenido en una celda semicircular. En un intento realizado se determina que el ángulo de incidencia es \( 30.0^{\circ} \) y e2 answers -
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