ASTR1000 University of Colorado Thermal Radiation and Astronomy Questions

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(1) Thermal Radiation

A telescope is observing another solar system, watching planets orbiting the star Ork.

The planet Mork has an average surface temperature of about 350K.

The planet Orson has an average surface temperature of about 50K.

(2 pts.) (a) What is the wavelength of maximum thermal emission from each of these two planets? (Hint: use Wien’s law)

(2 pts.) (b)In what region(s) of the electromagnetic spectrum are these emissions?

(2 pts.) (c)Which planet emits more energy per square meter of surface area per second? By a factor of how much? (Hint: use the Stefan-Boltzmann law)

(3 pts.) (d)Mork has a radius that is about 4 times Orson’s radius. Mathematically compare the total amount of energy emitted by each planet per second over the whole planet. Mork emits how many times more energy per second? (Remember: the surface area of a sphere is 4 pi R2)

(2 pts.) (e) Planet Mindy orbits Ork at an average distance of 3.76 AU while, on average, Planet Fred 15.04 AU. from Ork. Mathematically compare the intensity (flux) of the light that reaches the surface of the two planets. How many times stronger is the light on Mindy in comparison to the light on Fred?

(2) Spectra

a thermal blackbody spectrum

(3 pts.) (2 a)The plot above shows an example of a blackbody spectrum, the spectrum given off by a opaque object. What is the wavelength in meters where this spectrum is brightest?

(3 pts.) (2 b) Use Wein’s Law to estimate the temperature of the object emitting the spectrum above.

a thermal blackbody spectrum

(3 pts.) (2 c)The blackbody spectrum above would be produced by an object at a different temperature. What is the wavelength where it is brightest?

(3 pts.) (2 d) Estimate the temperature of the object emitting the spectrum above.

(3) Doppler Shift
(2 pts.) We know that hydrogen on the Sun emits hydrogen line emission at 656 nanometers. When we look at a spectrum of light that has been reflected by a planet we see that the hydrogen line appears at 658 nanometers. What does this tell us about the planet?

(4) Telescopes

(1 pts.) (a)What are the 3 main functions of a telescope?

(2 pts.) (b) Astronomers like to brag about the size of their telescopes. What dimension in particular are we interested in when we say “bigger”? Give 2 reasons why a bigger telescope is better.

(2 pts.) (c) “Size is not everything.” By some important criteria, the 94″ diameter Hubble Space Telescope can make better observations than the 230″ diameter Keck Telescope on Mauna Kea, Hawaii. What is the most important reason why the Hubble is able to make better observations than the Keck?

(5) The History of Astronomy Describe the main constributions of the following individuals to the science of astronomy . Be sure to write your responses in complete sentences.

(1 pt.) (a) Aristarchus of Samos

(1 pt.) (b) Eratosthenes of Cyrene

(1 pt.) (c) Hipparchus of Nicaea

(1 pt.) (d) Claudius Ptolemy

(1 pt.) (e) Nicholaus Copernicus

(1 pt.) (f)Tycho Brahe

(1 pt.) (g) Johanness Kepler

(1 pt.) (h) Galileo Galilei

(1 pt.) (i) Isaac Newton

(1 pt.) (j) William Herschel

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Power Point Presentation – Business

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Deliverable Length: 8 slide Powerpoint Presentation with a recorded 3 minute speech

The time has come for you to deliver an oral presentation for your classmates
and instructor based on the communications subject you chose during Week 1. Use
your outline from Phase 1 to develop a PowerPoint presentation to use in
conjunction with your speech.

Compile all of the information from Weeks 1–3. Review the entire
presentation, and rewrite, remove, or add any information and/or slides to help
organize the flow of the content of the presentation.

The final slide presentation should include:

  2. Title slide-Include your name, and title of the presentation- notes not
    needed for this slide
  3. Introduction slide- Introduce your presentation (50-75 words for notes)
    • Include your opener
    • Include your thesis
  4. A slide for your first main point-Include supporting points (50-75 words for
    notes)
  5. A slide for your second main point- Include supporting points (50-75 words
    for notes)
  6. A slide for your third main point- Include supporting points (50-75 words
    for notes)
  7. (Optional) A slide for your fourth main point- Include supporting points
    (50-75 words for notes)
  8. (Optional) A slide for your fifth main point- Include supporting points
    (50-75 words for notes)
  9. Conclusion slide- Restates the thesis, summarize key points of the
    presentation, and be sure to leave your audience with a final thought (50-75
    words for notes)
  10. Reference slide-Include sources used for your presentation in APA
    format-notes not needed for this slide

Click here for directions to record the 3 minute
speech of you discussing the information in your PPT presentation (These
directions are for using Microsoft PowerPoint 2010

Remember the topic that you chose on week 1 was

Effective Listening Skills

 

 

Deliverable Length: 2,000 words of new content

 

Assignment:

 

For this assignment, you will determine how you will monitor the risks that
you have projected, as well as the unknown risks that occur during the course of
the project. You will also formulate a control plan once a risk has been
identified during the monitoring process.

 

As part of the monitoring and control process, you will need to identify who
plays what role in this process, also known as the risks responsibility
plan. One method is to construct a RASI matrix that is similar to the
following example:

Doc3.docx, please open to see the graph

Please note that the risk categories and names are very general in this
example, and you will have more specific risk categories that are based on Weeks
1 and 2’s work.

 

Deliverables:

 

The overall project deliverables are the following:

 

  2. Update the Key Assignment Document title page with a new date and project
    name.
  3. Update previously completed sections based on instructor feedback.
  4. Complete New Content below and copy it under the sections in the Key
    Assignment Document that are called “Project Risks Responsibility Plan” and
    “Project Risks Monitoring and Control Plan.”
    • New Content
      • Project Risks Responsibility Plan
        • Include a responsibility matrix listing the stakeholders and project team
          members, with risk actions (or category of actions) along the top.
        • Next, fill in the table using the following letters, and refer to the
          examples in the Assignments section as “R” if they are responsible for
          monitoring and controlling the risk, “A” if they are the approver for taking
          action to respond to the risk, “S” if they have a support role in responding to
          the risk, and “I” if they only need to be informed. This is also known as a
          RASI chart.
      • Project Risks Monitoring and Control Plan
        • Include a detailed description of the overall monitoring process, including
          the techniques that will be used to monitor the existence and impact of
          individual risks.
        • Include a detailed description of the control process when a risk occurs.
        • Include a diagram flowchart to depict the steps in the control process from
          risk discovery through risk response.
  5. Be sure to update your table of contents before submission.
  6. Name the document “yourname_MPM344_IP4.doc.”

 

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What might we do to alleviate consumer apprehension?

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What might we do to alleviate consumer apprehension? Can you think of approaches that have been effective for other organizations or solutions that you have thought about that others might have implemented but did not?

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criminal jetuce

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Must use criminal justice ethics 5th edition
Select one dilemma from the many in scenario 3. Select the one professional group that most closely aligns with what you hope to be when you graduate. Write your paper incorporating as much material from the book or library material related to concepts we have addressed and using the one ethical system listed below from each group group 1 and group 2. Thus you will analyze the scenario with the steps you have been using all along then use one ethical system from group 1 and one from group 2)

Analyze and resolve the ethical dilemma in a 3 (12 point font, double spaced, 1 inch margins) page paper using the steps on how to resolve a dilemma.