Luminous - Study guides, Class notes & Summaries

Astro 1 PSU Exam 4 Questions & Revised Correct Solutions >Updated < Already Passed!!< Which is the smallest object? - ANSWER : -A neutron star A galaxy has an H-alpha emission line observed at a wavelength 10 percent larger than the rest wavelength of H-alpha. What is the redshift of the galaxy? - ANSWER : -0.1 What is in this image? - ANSWER : -Supernova remnant Which is the most luminous? - ANSWER : -Quasar Which contains the most stars? - ANSWER : -A spiral galaxy Galaxy...

astro 3 quizzes 7 & 8Most stars in our galaxy are like this one. Canopus Anilam Betelgeuse Sirius B Barnard's star - correct answer Barnard's star(red dwarfs and MS stars) On a dark night, we can see a range of about 5 magnitudes in brightness between the brightest and faintest stars in the sky. The brightest stars therefore appear about — times brighter than the faintest stars. 2.5 1000 5 100 10 - correct answer 100 Which star is a red giant? Anilam Sirius B Betelgeuse ...

You learned about the general concept of parallax in Chapter 2, and the video offers a review of the basic ideas. To check your understanding of the concept, which of the following is a valid way of demonstrating parallax for yourself? a. Get a camera, and photograph a person who is running back and forth. b. Hold up your hand in front of your face, and move it slowly back and forth. c. Hold up your hand in front of your face, and alternately close your left and right eyes. d. Look up ...

What are the measures in the Imperial system (Hint *FPS) correct answers Foot, pound, seconds What is the Imperial unit for mass (not weight) correct answers slug What are the units in the metric system (hint* MKS, or CGS) correct answers meters, kilograms, and seconds, or centimeters, grams, and seconds What do SI units include? correct answers the MKS system as well as: 1. ampere (A)(unit) - Current (quantity) 2. mole (mol)(unit) - Amount of substance (quanity) 3. kelvin (K)(unit...

The ventor motor on a power vent water heater fails, this component prevents operation? a)Pressure relief valve b)ECO switch c)High limit switch d)Pressure Switch - correct answer -Pressure Switch What is the ignition temperature for natural gas? a)920 degrees Fahrenheit b)1000 degrees Fahrenheit c)1300 degrees Fahrenheit d)3600 degrees Fahrenheit - correct answer -1300 Degree F A yellow flame is the result where there is no premixing of primary air with gas prior to ignition. Wha...

Physics Question and answers rated A+ Physics: Optics Isaac Newton said: - correct answer Light moves as tiny particles Huygens said: - correct answer Light is a wave Ray Model of Light - correct answer Light is represented as a ray (arrow) which travels in a straight line. The ray model was introduced as a way to study how light interacts with matter, regardless of whether light is a particle or a wave. Ray optics or geometric optics. Sources of Light - correct answer Lum...

How long are images kept in the medical system? - 7 years with an exception for kids - if kid, 7 years after 18th birthday How often is there a quality check for radiology monitors? - Daily Illuminance - intensity of light incident on a surface Lumen - Basic photometric unit Luminance - measure of brightness of a source (viewbox or monitor) Luminous flux - intensity of light from a source - emitted into the entire viewing area Luminous intensity - Property of the source of light (viewbox...

CHEM 111 Exam 1|100 Questions with Verified Answers Qualitative Observations - CORRECT ANSWER Descriptive in nature Ex-Changes in color and physical state Quantitative Observations - CORRECT ANSWER Measurements Numerical values obtained from instrumentation, glassware, and other measuring devices Varying precision and accuracy Scalar or dimensional unit - CORRECT ANSWER SI units based on the metric system of the English system Numerical value - CORRECT ANSWER reflects the precis...

Praxis Art Content Knowledge Latest Update 100% Correct Alla prima A painting technique used by the impressionists where a work was usually completed in one sitting with opaque layers of paint. Many impressionist works were painted directly from nature. (see Monet) Analogous colors Related colors that lie adjacent on the color wheel such as blue, blue- violet, and violet. share the same primary color. Binder An ingredient in paint which allows it to bind to a surface. A drying oil...

How does the hypothesis of inflation account for the existence of the "seeds" of density from which galaxies and other large structures formed? Ans- Inflation would have caused random, microscopic quantum fluctuations to grow so large in size that they became the seeds of structure. Why do virtually all the galaxies in the universe appear to be moving away from our own? Ans- Expansion causes all galaxies to move away from nearly all others. Suppose we observe a Cepheid variable in a ...