A photon is
A) a high-energy electromagnetic wave.
B) an electron that has been ejected from a metal surface by electromagnetic radiation.
C) a particle-like quantum of radiation.
D) one of the two types of nuclear particles.
E) the anti-particle to the electron.
Question 2
A certain siren radiates sound uniformly in all directions. At a distance of 17 m from the siren, the intensity level is 49 db. How many watts of power does this siren put out? The threshold of human hearing is 1.0 10-12 W/m2.
What will be an ideal response?
Methane combustion as an energy–yielding redox reaction.
Effect of the activation energy barrier.
The posted octane rating in most high-altitude areas shows regular at 85 instead of the usual 87.
Reductive electron transport sequences in the action of rNDP Reductase
France has produced most of its energy from nuclear power since the oil crisis of the 1970s
Electron Microscope