The threshold wavelength for cesium oxide is 7,000 angstroms, and for tungsten is 2,730 angstroms. A chemistry student was testing cesium and tungsten and found cesium emits light with a particular wavelength, but tungsten does not. What would be the most reasonable range of angstroms for the wavelength of the light that the student used? Explain your answer.​

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.