140-kilogram block is placed at a height of 22 meters on a frictionless inclined plane shown below. If the block is initially at rest , what is its speed when it reaches a height of 0.0 m ? OA 20.8 ^ m / s OB . 174 ^ m / s OC 102 ^ m / s OD . 47 4 ^ m / s

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?