Ten seconds after starting from rest a freely falling object will have a speed of about a)10m/s b)50m/s c)100m/s d)more than 500m/s

In what direction does the medium move relative to the direction of the wave? explain.

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?