What method of separation would work best on a homogeneous mixture salt water? Select all that apply.
A filtration
B distillation
C screening
D evaporation

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

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.