¿Cuánto mide la base de un rectángulo cuya diagonal mide 50 cm, y su altura es de 30 cm?
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Sound is a disturbance that travels through a medium as a

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

The particles that are found in the nucleus of an atom are