94.31: Light of a single frequency falls on a photoelectric material but no elev9e2 oc8zih(8zimxfv6j ui, ,5kklt .d9qy: i ctrons are emitzxy,jlm6d8vvk , ii(oi.:z8cu fie9kq2h9t5 ted. Electrons may be emitted if the:

  97.36: A student performs the Photoelectric Effect Expylbcu0 w ,1de6xef-.7h m4n ca4lv3c periment and obtains the data depicted in the accompanying0d6enlf1-cyc.4m, aw vc 3ulp h47xbe graph of $E_{Km}$, the maximum kinetic energy of the photoelectrons in eV, versus f, the frequency of the photons in $10^{14}$ Hz. What is the approximate work function for this material?

  96.28: A photon with frequency f behaves as if it had a 3tqqh8spb fa54 7hab: mass equal to:

  14.32: Planck’s constant is multiplied by the speedmjv7 q+/ kw7nm of light. The resulting value then is divided by three meters. This final value has the units of which one of the followinv nmqw7+7jm/kg quantities?

  10.48: Which of the following wavelengths (in nm) of electrhto 4rm::z 2afgy,wz,omagnetic radiation will produce photoelectrons of the least kinetic energy if the radiation i4 rta:w y:f,zo h2g,zms incident on a material with a work function of 4.80 eV?

  12.45: A stationary ato(qf0xif; nhq/ m of mass $4.00\times10^{-26}kg$ spontaneously emits a photon of energy 10.0 eV. Which one of the following choices best represents the speed, in units of m/s, of the atom after emitting the photon?

  16.45: Light of wavelength 250 nm shines onto a metallic surface. It is knz8jc ylw;o /7irkzp)6+cmd 6iown that the electrons ejected from the surface range in spee z)yc lk+z m6orj 8c/i;w67dpid as 0 ≤ v ≤ 4.85× 105 m/s. What is the work function of the surface?

  06.46: In the photoelectric efcau 0govq3v,7 fect experiment, a stopping potential of V_{stop}$ is needed when light of frequency $f_0$ shines on the electron-emitting metal surface. If the metal surface on which the light shines is replaced with a new material that has half the work function, what is the new stopping potential ???????????????? , for light of frequency $f_0$ shining on it?