Part C At a local high school track meet, an athlete in the 100 m spring reaches a top speed of 6.6 V(vm m/s)\). If the athlete's mass is 59 V(vm kg)), what is their de Broglie wavelength? O 1.55x10-28 vvm m)) O 3.41x10-36 V{rm m) O 1.70x10-36 V{\rm m)\) O 5.87x1035 V(vm m}) Submit Request Answer Part D What is the longest wavelength of the Balmer series ((n'-2\))? O 1.82x10-7 v{Vm m)) O 1.22x10-7 Vm m)) O 3.65x10-7 vvm m}) O6.56x10-7 vvm m)) O 5.47x10-7 \m m)) Submit Request Answer

Item 7 An X-ray photon has 37.6 keV of energy before it scatters from a free electron, and 33.7 keV after it scatters. Q Search Part A What is the kinetic energy of the recoiling electron? Express your answer using one decimal place. G| ΑΣΦ K = 3.9 Submit Provide Feedback W Request Answer

1a. A particle confined in a rigid one-dimensional box of length 13.1fm has an energy level En =25.59MeV and an adjacent energy level En+1=36.85MeV. Determine the values of n and n+1. 1b. What is the wavelength of a photon emitted in the n+1 to n transition? 1c. What is the mass of the particle?

An electron and a 0.0380-kg bullet each have a velocity of magnitude 510 m/s, accurate to within 0.0100%. Within what lower limit could we determine the position of each object along the direction of the velocity? electron       mm bullet       m

Part A The nucleus of a typical atom is 5.0 fm ( 1 fm 10-15 m) in diameter. A very simple model of the nucleus is a one-dimensional box in which protons are confined. Estimate the energy of a proton in the nucleus by finding the first three allowed energies of a proton in a 5.0 fm long box. Express your answer using two significant figures. ΜΕ ΑΣΦ E₁ = Submit Request Answer Part B Express your answer using two significant figures. VAΣd ΜΕ ΑΣΦ E2 = Submit Request Answer Part C Express your answer using two significant figures. Η ΜΕ ΑΣΦ E3 = Submit Request Answer Provide Feedback ? ? ? J J J

Electrons with a speed of 1.4×106 m/sm/s pass through a double-slit apparatus. Interference fringes are detected with a fringe spacing of 2.4 mmmm .     Part A What will the fringe spacing be if the electrons are replaced by neutrons with the same speed? Express your answer in micrometers.         ΔynΔyn = 1.30•10−6 μmμm   SubmitPrevious AnswersRequest Answer  Incorrect; Try Again; 4 attempts remaining Part B What speed must neutrons have to produce interference fringes with a fringe spacing of 2.4 mmmm ? Express your answer in meters per second.

An electron is in the ground state of a square well of width L = 4.00 x 10-10 m. The depth of the well is six times the ground-state energy of an electron in an infinite well of the same width. Part A What is the kinetic energy of this electron after it has absorbed a photon of wavelength 79 nm and moved away from the well? Express your answer in electron volts. K = ΜΕ ΑΣΦ Submit Request Answer ? eV

Part A The intensity of sunlight hitting the surface of the earth on a cloudy day is about 0.50 kW/m² Assuming your pupil can close down to a diameter of 2.0 mm and that the average wavelength of visible light is 550 nm, how many photons per second of visible light enter your eye if you look up at the sky on a cloudy day? Express your answer using two significant figures. N = ΜΕ ΑΣΦ Submit Request Answer ?

In Millikan's oil-drop experiment, one looks at a small oil drop held motionless between two plates. Take the voltage between the plates to be 2247 V and the plate separation to be 1 cm. The oil drop (of density 0.81 g/cm3) has a diameter of 4.0 ×10-6 m. Find the charge on the drop, in terms of electron units.  e

The uncertainty in position of a proton confined to the nucleus of an atom is roughly the diameter of the nucleus. Part A If this diameter is 5.6×10-15 m, what is the uncertainty in the proton's momentum? Express your answer using two significant figures. 15. ΑΣΦ Ap> Submit Provide Feedback Request Answer B m ? kg-m/s