13 2.5/4 points Previous Answers My Notes Ask Your Teacher I.) Find the energy (and wavelength)...
2. + 1/2 points Previous Answers SerCP11 28.2.OP.003. My Notes + Ask Your Teacher Early 20th-century models predicted that a hydrogen atom would be approximately 10-10 in "size." (a) Assuming that the electron and proton are separated by r = 1.0 x 10-10 m, calculate the magnitude (in N) of the electrostatic force attracting the particles to each other. 2.3e-8 N (b) Calculate the electrostatic potential energy (in eV) of a hydrogen atom (an atom containing one electron, one proton,...
MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER DETAILS T-12 Points) SERCP11 28.3.OP.015. A hydrogen atom emits a photon when its electron shifts from a higher energy level to a lower one. Suppose that one atom emits a photon whose wavelength equals 1,283 nm. If the energy levels are defined by the quantum number n (where n. 1,2,3, what were the initial and final values of n? in, Need Help?
Previous Answers +Ask Your Teacher 10. +4/8 points My Notes A long time ago, in a galaxy far, far away, electric charge had not yet been invented, and atoms were held together by gravitational forces. Compute the Bohr radius (ao) and the n = 5 to n 4 transition energy (Es E4) in a gravitationally bound hydrogen atom ao 1.19e29 Es-E4 = eV Additional Materials eBook Practice Another Version Submit Answer
An electron has a kinetic energy of 4.10 eV. Find its wavelength. 5.995 times 10^23 - 1 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully A photon has energy 4.10 eV. Find its wavelength 3.03 times 10^-3 Your response is off by a multiple of ten, nm In the ground state of hydrogen, the uncertainty in the position of the electron is roughly 0.10 nm. If the speed of...
2. [0/1 Points) DETAILS PREVIOUS ANSWERS SERPOP5 22.P.013.WI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A velocity selector consists of electric and magnetic fields described by the expressions Ē = EŃ and B = B ſ, with B = 22.0 mt. Find the value of E such that a 810-eV electron moving in the negative x direction is undeflected. X How do you determine the speed of the electron if you know its kinetic energy? kV/m Need Help? Read It...
Thank you! 5. [1/4 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 29.3.P.026. (a) Calculate the energy in eV of an IR photon of frequency 1.56 X 10 13 Hz. 0.064 eV (b) How many of these photons would need to be absorbed simultaneously by a tightly bound molecule to break it apart? 121 X photons frequency 7.18 x 1020 Hz? (c) What is the energy in eV of a y ray 1.29 X eV (d) How many tightly bound molecules could a...
4. + ㅢ1 points My Notes Ask Your Teacher In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward. This result was not consistent with then current models of atomic structure and led Rutherford to propose the existence of a very dense concentration of positive charge at the center of an atom-the atomic nucleus. The alpha particle...
6. 1/4 points | Previous Answers SerPSE10 24.3.OP007 My Notes Ask Your Teacher A small sphere has a charge of q-2e, where e is the charge on an electron. (a) Determine the electric potential (in V) due to the charge at a distance r 0.330 cm from the charge. (b) Determine the electric potential difference (in V) between a point that is 2r away and this point, that is v2r) - v). o Determine the electric potential difference (in V)...
7. 1.1/5 points Previous Answers SerPSES 10. P054 My Notes Ask Your Teacher A thin, cylindrical rod i = 24.4 cm long with a mass m = 1.20 kg has a ball of diameter d = 6.00 cm and mass M = 2.00 kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top as shown in the figure below. The combination is free to pivot about the bottom end of the rod...
2. 3.32/5 points Previous Answers KatzPSEf1 13.P.053.MI. My Notes + Ask Your Teacher Two children (m = 25.0 kg each) stand opposite each other on the edge of a merry-go-round. The merry-go-round, which has a mass of 1.64 x 102 kg and a radius of 1.2 m, is spinning at a constant rate of 0.34 rev/s. Treat the two children and the merry-go-round as a system. (a) Calculate the angular momentum of the system, treating each child as a particle....