94.31: Light of a single fr:i ud2r f(tj-tequency falls on a photoelectric material but no electrons are emitted. Electrons may b-f:( jirtu t2de emitted if the:

  97.36: A student performs the Photoelectric Effect Ex /pbgp sm0myh-oh5+ d3periment and obtains the data depicted in the accompanying sp/ y5mphd 0bgm3o+h-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 mass equal to:ew1ok a10ify7 ampyyv0nh g: k98-f(h

  14.32: Planck’s constant .lx/y5x. ruo:g giab )is multiplied by the speed of light. The resulting value then is divided by three meters. This final va.gl5ux/)x. yra ib o:glue has the units of which one of the following quantities?

  10.48: Which of the following wavelengths pg3wvo. 0tga qroj 3q/.m9w9ch+1td y(in nm) of electromagnetic radiation will produce photoelectrons of the least kinetic energy if the radiation is incident on a material with tgq cg+./3ywmd1 9r0vo op tw9jqh3.aa work function of 4.80 eV?

  12.45: A stationary atom ofnvhq rlfwi+z1 6q.:)h 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 shin)rx3vw*p u eq* s-+b5ajr.nqj es onto a metallic surface. It is known that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is the work function of the surr -.jx*eqnur)5s jv+a3 qpw*b face?

  06.46: In the photoelectric eo(g b/c15b rhhffect 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?