What shadow zone is larger​

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.

Reactions in cells take place at about a. 40°c b. 0° c. 100°c d. 60°c

Which of the following has potential energy but no kinetic energy? longitudinal sound waves an arrow shot from a bow a compressed spring a vibrating atom