a particular guitar string is supposed to vibrate at 197 Hz, but is measured to actually vibrate at 205 Hz. By what percent should the tension in the string be changed to get the frequency to the correct value

Tungsten-filament lightbulb emits light based on the temperature of the filament. which phenomenon does this demonstrate?

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?

Positive ions differ from neutral atoms in that