studying for my final, help 14) [5 pts) Calculate the most probable value of r for...
Calculate <r> and the most probable value of radial function for the H atom in its ground state
studying for my final, help 18) (5 pts) If a rubidium surface is irradiated with blue light of wavelength 450.0 nm, what is the kinetic energy of the electrons emitted? (The work function for rubidium is d = 2.09 eV.) a. 2.67 eV b. 18.51 eV c. 0.67 eV d. 5.89 eV e. 0.26 eV
studying for my final, help x-rays are observed at an angle of 135.0° to 6) (5 pts) What is the x-ray wavelength prime, if your initial wavelength = scattered from a block of material. The scattered x-rays are observed at an angle or the incident beam. a. 0.250 nm b. 0.410 nm c. 0.504 nm d. 1.510 nm e. 0.142 nm
studying for my final, help pulent 5) (5 pts) Find the uncertainty in the momentum (in kg.m/s) of an electron if the uncertainty in its position is equal to 3.4 x 10-10 m, the circumference of the first Bohr ohit a. 6.2 x 10-25 kg.m/s b. 1.6 x 10-25 kg.m/s c. 1.55 x 10-25 kgm/s d. 19.4 x 10-25 kgm/s e. 2.0 x 10-24 kg. m/s
studying for my final, help 7) [1 pt) is a shell of the hydrogen atom with n = 3, the permitted values of the orbital magnetic quantum number m, are a. -1,0,1 b. 2,1,0 c. 2,1,0,-1,-2 d. 0 e. 3,2,1,0,-1,-2,-3
studying for my final, help 19) (5 pts) A photon with an energy of E, = 2.090 GeV creates a proton-antiproton pair in which the proton has a kinetic energy of 95.0 MeV. What is the kinetic energy of the antiproton? (m,c2 = 938.3 Mev) a. 50.8 MeV b. 84.2 MeV c. 118.4 MeV d. 60.2 eV e. 231.4 MeV
studying for my final, help 19) [5 pts) A photon with an energy of E, = 2.090 GeV creates a proton-antiproton pair in which the proton has a kinetic energy of 95.0 MeV. What is the kinetic energy of the antiproton? (m,c2 = 938.3 MeV a. 50.8 MeV b. 84.2 MeV c. 118.4 MeV d. 60.2 eV e. 231.4 MeV
studying for my final, help 17) [5 pts] The half-like of 1311 is 8 days. On a certain day, the activity of an 1311 sample is 6.4 mCi. What is its activity 40 days later? a. 400 uCi b. 200 uCi c. 100 pCi d. 50 uCi e. 300 uCi
studying for my final, help 3) [5 pt) What is the maximum kinetic energy (in eV) of a photoelectron emitted from a surface whose work function is 5.0 eV when illuminated by a light whose wavelength is 200 nm? a. 1.9 eV b. 1.2 eV c. 3.1 eV d. 0,0 eV e. 6.2 eV
studying for my final, help 15) [1 pt] What value of Z (atomic number) and A (mass number) result in the following B-decay? 14 AX + é a. Z=5; A=14 b. Z=4; A=10 c. Z=6; A=14 d. Z=7; A=14 e. Z=7; A=13