Diante de uma agência de inss há uma fila de aproximadamente 100m de comprimento, ao longo do qual se distribuem de maneira uniforme 200 pessoas. aberta a porta, as pessoas entram durante 30s, com uma velocidade média de 1m/s. avalie:

a) o número de pessoas que entraram na agência?
b) o comprimento da fila que restou do lado de fora?

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

What was the first instrument to ever record an earthquake?