Una canoa rema hacia el este a 40km/h y el río fluye hacia el este a 15km/h. La velocidad resultante de la canoa en km/h es:

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?