The threshold wavelength for cesium oxide is 7,000 angstroms, and that for tungsten is 2,730 angstroms. A chemistry student was testing cesium and tungsten and found that 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.​

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.

Iam looking for this answer too!