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

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves