Calculate the three longest wavelengths

Assignment Help Physics

Reference no: EM131013966

1. In 1896 Pickering found lines from the star Zeta Puppis that had not been observed on Earth. Bohr showed in 1913 that the lines were due to He+. Show that an equation giving these wavelengths is.

2. Calculate the three longest wavelengths and the series limit for the molybdenum atom.

3. An unknown element is used as a target in an x-ray tube. Measurements show that the characteristic spectral lines with the longest wavelengths are 0.155 nm and 0.131 nm. What is the element? (Hint: you will ?nd the answer to Problem 40 to be useful.)

Reference no: EM131013966

Questions Cloud

Why are cold neutrons useful for studying crystal structure : It has been said that many experimental discoveries are made as a result of accidents (for example, that of Davisson and Germer). This statement may have some truth, but what traits and abilities must good scientists possess to take advantage of t..

What determines whether a given photon is an x ray : In the early 1900s it was found that x rays were more dif?cult to refract or diffract than visible light. Why did this lead researchers to suppose that the wave- lengths of x rays were shorter rather than longer than those of light?

Compute energy needed to remove both electrons in helium : Show that the net force on each electron is toward the nucleus and has magnitude The energy needed to remove both electrons is just the negative of the energy you found in part.

Calculate energies of the three lowest states of positronium : Show that the quantization of angular momentum L = n U follows from Bohr's Assumption D that the mean value K of the kinetic energy of the electron- nucleus system is given by K = nhforb/2. Assume a circular orbit.

Calculate the three longest wavelengths : An unknown element is used as a target in an x-ray tube. Measurements show that the characteristic spectral lines with the longest wavelengths are 0.155 nm and 0.131 nm. What is the element? (Hint: you will ?nd the answer to Problem 40 to be usefu..

Calculate the rydberg constant for the single- electron : Compare the Balmer series of hydrogen with the se- ries where n/ = 4 for the ionized helium atom He+. What is the difference between the wavelengths of the La and L/3 line of hydrogen and the nu = 6 and 8 of He+? Is there a wavelength of the Balme..

What aspects of nelson''s xanadu resemble the web : Search the Web for illustrations of the proposed Memex I or Memex II and compare the sketches to modern computer devices

Memo - strategy to reduce or save tax : Write two memos - Income averaging is it still available as strategy to reduce or save Tax - Usa political parties which is best for America as a whole which is best for individual

Low capacity ships with high room rate : For passengers with incomes of $80,000 and above Very exclusive Capacity of about only 700 Low capacity ships with high room rate

User Account

All Pages