Concept explainers
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.
Alternative gravity. how would gravity have to be different in order to explain the rotation curve of galaxies without the need for the metter? would gravity need to be stronger or weaker than expected at very large distance ?explain.
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The Cosmic Perspective Fundamentals (2nd Edition)
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- For the picture below what is the differences of light spectra of different galaxies. compared to a laboratory reference to uses as comparison, or control group. What is the differences between nearby stars and galaxies compared to distant stars and galaxies by using the spectral lines ?arrow_forwardPlease show your solution and at the same time BOX the answers that corresponds to each blank on the question. Make sure to fill all the blanks. Thank you. STRICKLY FOLLOW THIS: Calculated Answers Express your answers without rounding off and without scientific notation unless instructed otherwise. Multiple Blanks Write powers or subscript as is. Ex: Use b2 if you mean b2 or b2 Spell out Greek letters. Ex: Use pi if you mean greek letter pi Write answers without spaces. Ex: Use 2epsilon0r3 if you mean 3e0r3 Write fractions with a slash. Ex: Use 1/2arrow_forwardPart A What was the distance between the points that would someday become, respectively, the center of the Milky Way Galaxy and the center of the Virgo Cluster at the time of decoupling? (The present separation is 18 Mpc.) Express your answer using two significant figures. 1ΨΕΙ ΑΣΦ ? Request Aswer Submit kpearrow_forward
- format in solving: 1. given 2. diagram (simple labeled sketch) 3. solution * formula (from formula sheet) * algebra * substitution * solve 4. therefore statement (full answer with correct sig figs)arrow_forwardWhat factors contribute to free space loss? Explain each factor What are the formulas to be used for free space loss?arrow_forwardShow your complete solution and box the final answer. Please write your solution clearly and readable. Thank you.arrow_forward
- Please provide steps for how you got the solution to the problem provided below, I am trying to understand the problem, not just see an answer. Thank you so much. A space ship warp engine has enough energy to perform two warp jumps going between star systems (i.e., the warp battery has 2 units of charge). The ship can operate in two modes: survey the current system or charge battery. On a given day the ship will complete the survey of the current system with probability 0.24. Then, if battery has capacity, it will move to a new system, consuming 1 unit of charge. If the battery is empty, the ship will switch to the charging mode. In the charging mode, the ship will recover 1 unit of charge on a given day with probability 0.95. The ship will stay in the charging mode until the battery is full. Model the behavior of the ship as a Markov chain.arrow_forwardexplain each physics formula by saying what each variable means/stands for and explain the formula as a whole, please. Ignore the one about proboblilty please.arrow_forwardDetailed explanation of each step so I could study for a test C6M.7 Astronomers currently believe that every galaxy has a supermassive black hole at its center and that a typical galaxy has collided with other galaxies several times since the beginning of the universe. Imagine that the central black holes of two colliding galaxies end up, after the collision, orbiting each other in the middle of a cloud of dust and stars. Assume that the black holes have the same mass M (which maybe millions or even billions of times that of the sun) and each is initially in a circular orbit of radius R around the pair’s center of mass (which is halfway between them), and the surrounding cloud has no net angular momentum, as shown in figure C6.14. Over time, frictional interactions with the cloud cause the black holes to slowly spiral in toward each other. If their orbits remain approximately circular as they slowly spiral in, then thespeed of each in its circular orbit will be │V│ = 1/2 (GM/r)^1/2,…arrow_forward
- Solve the following problems, show complete and clean solution and box your final answer. Thank you.arrow_forwardWrite a CR for the solved problem. A example of one is attached as well. The problem about the ROCK is the example CR. The problem you ARE writing a CR for is 5x^2-8x=3. Instructions below. For the CR's, claim you should answer the question of , do you get 2 real solutions, 1 real solution, or 2 complex solutions? For your reasoning you should explain how you know. Use the example attached to help you answer. hints: that plus minus sign means there are two answers. If the number under the square root is positive, you have two real solutions. If the number is negative you have two complex solutions. If the number is 0 under the square root you have 1 real number solution.arrow_forwardSCHO You are NOT permitted to use a calculator on this 1. The purpose of studying the various velocities and the distances of galaxies in these studies was: 4. Which of the fol. would help evalu A. Comparir Hubble cc A. To prove that galaxies were moving B. To determine the Hubble constant (H.) which helps determine the age of the universe C. To determine the size of a galaxy which helps determine the Hubble constant (Ho) D. To determine the age of the universe which helps determine the Hubble constant (Ho) age of the B. Using adv the velocit distances Earth C. Studying on galaxies sm D. Studying o galaxies than constraints o 2. Which of the following describes the relationship between Study 1 and Study 2? 5. Which of the followin strengthen the results f A. Study 2 is a more recent version of Study 1 B. Study 1 is an expanded version of Data from the Illuminate Education TM, Inc.arrow_forward
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