If you need a routine health checkup, which facility is most cost-effective?

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

What are similarities and differences between refraction, reflection, diffraction and absorption?

An object's buoyant force and weight mean the same thing.a. trueb. false