Cobalt-60 is a radioactive isotope used to treat cancers. Agamma ray emitted by this isotope has an energy of 1.33 MeV(million electron volts; 1 eV=1.602X10⁻¹⁹J). What is the fre-quency (in Hz) and the wavelength (in m) of this gamma ray?

The binding energy of a certain metal is 331 kJ/mol of electrons. What is the kinetic energy (in J/e-) of an electron ejected from the surface of this metal when exposed to visible light with a wavelength of 223 nm?

The binding energy (work function) of titanium is 4.20 x 10-18 J per electron and you shine light that has a frequency of 7.85 x 10 ¹5 Hz. If 125 photons are absorbed by the Ti metal, then_ electrons should be ejected and each should have a Kinetic Energy of 154, Zero Joules O 125, 1.00 x 10-18 J Zero, 4.20 x 10-18 J O 154, 1.00 x 10-18 J O 125, Zero Joules

One of the radiographic devices used in a dentist's office emits an X-ray with a wavelength of 2.282 × 10−11 m. What is the frequency of this X-ray in petahertz (PHz)?