Two cars leave from two different cities 50 miles apart on a straight highway. If one car is going at 50 mph and toward the other car which is going 60 mph, at
what time will they meet?

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

What are transitions between a liquid and a solid called? identify which way they are transitioning

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.