En el parque de diversiones, un carrusel a su velocidad de operación constante efectúa unarotación completa en 45 s. Dos niños están montados en caballos, uno a 3 m del centro delcarrusel y otro a 6 m del centro. Calcula la rapidez angular del carrusel.

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.