Awave has a frequency of 3,5mhz and a wavelength of 85,5 m. what is the wave velocity through
air (air, n=1,00)?

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.

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms

What powdery mineral is a health hazard when airborne?