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?
Metabolic pathways involved in lipolysis, the breakdown of fats (triglycerides) for energy.
The electromagnetic spectrum. Ionizing radiation is only a small portion of the electromagnetic ...
Permafrost: High albedo, reflects as much as 90% of the Sun’s energy
An electron micrograph showing transcription of a gene.
Alpine tundra. Low-growing, hardy plants at a high altitude in Washington’s Cascade range.
Electron Transfer Phosphorylation