3) Dos fuerzas paralelas de igual sentido de 20N y 10N están aplicadas en el extremo de una barra rígida de 2 m. a. Calcular la intensidad de la fuerza resultante.
b. Calcule su punto de aplicación respecto de la fuerza de 20N.
c. Realice un diagrama aproximado de este sistema.

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a diamond or heart. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability of randomly selecting a diamond or heart or club. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability of randomly selecting queen or club. (type an integer or a decimal rounded to three decimal places as needed.)