Car travels 67 miles at a speed of 45 mi/hr. How long did it take?

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.

How many moles are in 123.0 grams of kclo4?

What is the source of continuous heat and energy that we receive from the sun