A photon has a frequency of 1.8 × 10⁸ Hz. What is the energy of this photon?

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?