+1-415-670-9189
info@expertsmind.com
What is the wavelength in nanometers of the photon
Course:- Physics
Reference No.:- EM13795761




Assignment Help
Assignment Help >> Physics

Q1. The energy levels of a certain atom have the following pattern:

E1= -340eV (n = 1),

E2 = -85 eV (n = 2),

E3 = -37.78eV (n = 3), and so on..

An electron drops from n=3 to n=1 in this atom. What is the wavelength in nanometers of the photon emitted in the process? Planck's constant h = 6.626 x 10-34 Joule-sec, 1eV = 1.6 x 10-19 Joules.

Q2. How Many photons per second come out of a ruby laser that is giving out 2 milliwatts of power? (1 watt = 1 Joule/sec and 1 eV = 1.6 x 10-19 Joules). Look up the for what wavelength a ruby laser produces.

Q3. You have three liquids: ethyl alcohol, chloroform and ice-cold Water. When you mix 100 grams of ethyl alcohol at a temperature of T=25 Celsius with 200 grams of ice-cold water (T= 0C), the resulting mixture has a temperature of 5.55 C. When you mix 200 grams of ethyl alcohol at a temperature of T=25 Celsius with 100 grams of chloroform at T=10 C, the resulting mixture has a temperature of 22.22 C. What is the final temperature when you mix 150 grams of ethyl alcohol at T=15 C with 250 grams of chloroform at T=5 C? (You are given that the specific heat capacity at water is 4.2 J/g.K).




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Physics) Materials
The Office of International Affairs is considering increasing its programming staff for its study abroad program and is going to sample the entering freshman class to see ho
Three charges (q1 = 7.6 ?C, q2 = -4.7 ?C, and q3 = 1.1?C) are located at the vertices of an equilateral triangle with side d = 6.1 cm. q1 is on the bottom left, q2 is on the
The former move along the surface of the earth much like the ripples in the surface of a pond, while the other type propagate through the whole earth forming a hemisphere ar
A thick, vertical iron pipe has an inner diameter of 0.077 m. A thin aluminum (? = 23x10-6 (C°)-1) disk, What is the temperature of the aluminum disk when the disk falls into
Two microscope slides are placed together but held apart at one end by a thin piece of tin foil. Under mercury green light (546 nm) normally incident on the air film formed
Two ants race across a table 56 cm long. One travels at 4.5cm/s and the other at 2cm/s. When the first one crosses the finish line how far behind is the second one.
An object is moving with constant acceleration. During 24 s of the motion the object traveled 40 m and during the same 24 s the object speedincreased 4 times. Calculate the ac
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.20 m/s collides head-on with a 0.480 kg ball at rest. If the collision is completely elastic, what will be