Listening to your favorite radio station involves which area of physics?
a-) optics
b-) thermodynamics
c-) vibrations and wave phenomena
d-) relativity

Heat from the sun reaches earth to a. radiation b. convection c. conduction

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

In a good thermo flask the main cause of heat loss is