2) Un estudiante lanza hacia arriba una pelota. Otro estudiante que se encuentra en el tercer piso, a 8m de altura, la recibe 3.5 segundos después. ¿Con qué velocidad se lanzó la pelota? ¿Cuál sería la altura máxima que alcanza la pelota con esa velocidad inicial? argumentar física y matemáticamente

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration