Exam 1 (Practice Problems). 1. What is the energy of a photon whose frequency is 3.002 X 1012 Hz? 2. A red light traveling in a vacuum has a wavelengt...
converges (it's a p-series with p = 2 > 1), the series ∑ n3 n5+3 also converges by the comparison test. 2. ∑. ∞ n=1. 3n. 4n+4. Answer: Notice that. 3n. 4n + 4.
Why can electromagnetic waves travel through a vacuum? 4. What speed do all electromagnetic waves travel at in vacuum? 5. Red light, a type of electromagnetic wave, has a wavelength of 0.0000078 meters, what is its frequency in Hz? 6. Most kitchen mi
Directions: Each of the following questions is followed by five suggested answers or completions. Select the best answer ..... (D) Folk culture is often the result of cultural isolation, while popular culture often results from cultural diffusion. (E
Download Scholarly, academic and scientific journals contain articles that report on new research. The article is written by someone with academic qualifications or expert ...
Download Scholarly, academic and scientific journals contain articles that report on new research. The article is written by someone with academic qualifications or expert ...
Download Scholarly, academic and scientific journals contain articles that report on new research. The article is written by someone with academic qualifications or expert ...
Download Scholarly, academic and scientific journals contain articles that report on new research. The article is written by someone with academic qualifications or expert ...
Exploring the Reconnection No. 1 August 2007 page 1
This guidance has been produced in support of the good practice recommendations in the Code of Practice on Records Management issued by the Lord Chancellor under
Source: Why do interns make prescribing errors? A qualitative study MJA 2008; 188 (2): 89-94. Ian D Coombes, Danielle A Stowasser, Judith A Coombes and Charles Mitchell. Adapted from J. Reason's model of accident causation. 7. Page 8. Patient Safety
Included in the series: * 1. What is Educational Planning? /' P. H. Coombs 2. The Relation of Educational Plans to Economic and Social Planning
Created by the Gay Straight Alliance for Safe Schools and adapted in part from Part 7 of the GLSEN Jump-Start Guide “Where’s the ‘T’ in GSA?
on a London table, the sequence of events that brought it there is not very different from the sequence that brings a California bottle to a table in New York- and the distance traveled is much less! Yet, international economies involve new and diffe
wages and work conditions existed so that human resources, the employees, were treated fairly (Department of Labor, 2010). In the 1920s, a Harvard research group
1 Page 1 of 12 Two Over One Game Force (2/1) – What It Is … And What It Isn’t A word of explanation first. This is a definition of what the system is and
A certain electromagnetic wave has a wavelength of 625 nm. a.) What is the ... ( Note: All electromagnetic travels at the speed of light in a vacuum). 2.8 x 107 mi x 1 ... λ = c = 2.998 x 108 m x 1 nm = 4.0 x 102 nm ν 7.5 x 1014 s-1. 10-9 m b.) Calcu
Chapter 1: Distributed Systems: What is a distributed system? Fall 2008 Jussi Kangasharju . Course Goals and Content Distributed systems and their: Basic concepts
Chapter 1: Distributed Systems: What is a distributed system? Fall 2008 Jussi Kangasharju
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Massachusetts Department of Environmental Protection Environmental Results Program Compliance Certification Instructions Engines and Turbines (Non Emergency Units)
1. Definition of Change Management ‘Any modern enterprise having a fear to change never survives today!’ Society today is characterized by ongoing quick change
They must be attacked before entry into a host cell. or The infected host cells must be killed to kill the ... CHAPTER 1 WHAT IS MICROBIOLOGY AND WHY IS IT IMPORTANT?
What Is a Thinking Curriculum? T.F. Fennimore and M.B. Tinzmann NCREL, Oak Brook, 1990 The Characteristics of Successful Learners Revisited Guidebook 1 described
Exam 1 (Practice Problems) 1. What is the energy of a photon whose frequency is 3.002 X 10
12
Hz?
2. A red light traveling in a vacuum has a wavelength of 728.0 nm. a. What is the frequency of the light? b. What is the speed of the wave in m/s? 14
3. A purple light has a frequency of 7.420 x 10 Hz. a. What is its wavelength? b. What is the energy of one photon of light? 4. An electron in the hydrogen atom falls from one energy level to n = 2. The wavelength of the photon emitted in this process was 434.1 nm. What was the initial energy level of the electron? e-
n=? λ = 434.1 nm
n=2
5. Using the Rydberg equation, determine the wavelength of a photon emitted when an electron falls form n = 2 to n = 1 within the hydrogen atom? 6. The Bohr equation is used to calculate the energy of an electron within the hydrogen atom. a. What is the energy of an electron in n = 4 of the hydrogen atom? b. What is the energy of an electron in n = ∞ of the hydrogen atom? c. How much energy is needed to remove an electron from the hydrogen atom if the electron is in n = 4? d. What is the frequency and wavelength of light describes in part c? -18
J, what is its wavelength in nm?
-17
J. What is its frequency in s ?
7. If the energy of a photon is 1.320 × 10 8. A photon has an energy of 5.530 × 10
-1
9. What is the frequency of a photon emitted when an electron drops from n = 5 of the hydrogen atom to n= 1? 10. According to the Bohr theory of the hydrogen atom, what is the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state? Hint: ionization of a hydrogen + atom indicates the electron has been removed to produce an H . 11. An electron in the hydrogen atom is excited from n = 1 to n = 3. What is the wavelength of light absorbed in order to allow this transition? 12. The hydrogen emission spectrum has a line at 1005 nm. If the electron’s final energy level is 3, what was the original n level?
13. Fill in the following table with the proper formula. 3NO3 PO4 Mg
O
2-
HSO4
-
2+
Hg2
2+
NH4 Cu
+
+
example: Cu2O
14. Fill in the following table. Isotopic Symbol Number of Protons 112
58
Number of Electrons
13
14
10
56
81
56
54
74
54
Cs
Fe
123
207
Number of Neutrons
Sb
Pb
2+
10
15. Boron has two stable isotopes; B (mass = 10.01 amu) and 10 What is the percent of naturally occurring B?
