Which color light has the highest frequency?

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

How do you tell if someone actually cares about you? and just say they do?

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