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suppose a cepheid has a period of 2 days. estimate its
luminosity from the figure above and then determine its distance if
its measured brightness is 6.6 x 10^-12 watts/m^2
its distance is ____ x 10^7m
. Cepheid variables .RR Lyrae stars 104 103 10 0.2 0.5 1 2 5 10 20 50 100 Pulsation period (days) Suppose a Ceoheid...
2] How far away is a RR Lyrae variable star if it has a period of...
2] How far away is a RR Lyrae variable star if it has a period of 0.5 days and a brightness of 2.3 x 10^-11 W/m^2? Answer: 8.14 x 10^18 m, 860 ly
2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1...
2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1.O 2.0 3.0 0.0 1.0 Log Period (days) (a) A galaxy is observed to contain a type I Cepheid of period 30 days and apparent magnitude 20. Find the distance to the galaxy (b) Type I and Type II Cepheids are distinguished by the shape of...
. [5 marks] The average apparent brightness of a particular Type I Cepheid variable in a...
. [5 marks] The average apparent brightness of a particular Type I Cepheid variable in a distant galaxy is found to be 4.30 x10-17 W/m2 ; the period of the Cepheid is 30 days. What is the distance to the galaxy? Give your answer in parsecs and in light years. [Make use of Figure 19-20 on page 553 of our textbook to read off what the luminosity of this Cepheid would be in units of L; use the vertical scale...
Answer is E but does not show work. I need to see work on how answer...
Answer is E but does not show work. I need to see work on how
answer was obtained. Sketch would be helpful as well. Thanks
9. A cube has one corner at the origin and the opposite corner at the point (2m, 2m, 2m). The sides of the cube are parallel to the coordinate planes as shown in the figure below. The electric field (measured in N/c) in and around the cube is given by E 32 - 7zk where...
Need help, please show work. Some correct answers are already shown. All I need to know...
Need help, please show work. Some correct answers are already
shown. All I need to know is how to work through the problems.
Please show work
3. Consider the following information about Nicaragua Year | CPI inflation | Wage | % Real Real change wage wage in wage base 2014 change adjusted real wage ear cordobas wage 2.50 n/a $737.5 | 766.35 199943.98 n/a 2004 | 59.32 | 34.88% | 3.50 | 4090 200995.48 2014135.07 5.687.67 5.907.97 n/a 3.9% 5.50...
*Show ALL work, answer is given already* 2) A hypothesis will be used to test that...
*Show ALL work, answer is given already*
2) A hypothesis will be used to test that a population mean equals 10 against the alternative that the population mean is greater than 10 with unknown variance. What is the critical value (Z a/2) for the test statistic T. for the following significance levels? a = 0.01 and n = 20 critical value > 2.539 a = 0.05 and n = 12 critical value > 1.796 a = 0.10 and n =...
I know the final answer but I need to know all steps please show work for...
I know the final answer but I need to know all steps please show
work for good rate
Problem 1. A manufacturer has a machine that, when operational at the beginning of a day, has a probability of 0.13 of breaking down sometime during the day. When this happens, the repair is done the next day and completed at the end of that day (a) Formulate the evolution of the status of the machine as a Markov chain by identifying...
Hello I need help with this question. Please answer both questions and please show all work...
Hello I need help with this question. Please answer both questions
and please show all work so I have a better understanding how to
better do this. Thanks please show all work.
Answer both of the following Roman numeral questions (I, II). Equal credit. A company has fixed cost of $44,000, variable cost per unit of S12, and sells its product at S19 each a. What quantity must the firm sell in order to break even? Explain how you reached...
Need help, correct answer is shown. All I need to know is how to work through...
Need help, correct answer is shown. All I need to know is how to
work through the answer. Please show work.
Suppose that nominal GDP increases by 6 percent in a year when real GDP increases by 3 percent. This means that the inflation rate, as measured by the percentage change in the GDP deflator, is approximately percent in that year. × 0.5 ×2
[Only if you understand the problem, please solve. I really need
to get correct answer. Last guy answered it wrong.]
suppose a cepheid has a period of 2 days. estimate its
luminosity from the figure above and then determine its distance if
its measured brightness is 6.6 x 10^-12 watts/m^2
its distance is ____ x 10^7m
. Cepheid variables .RR Lyrae stars 104 103 10 0.2 0.5 1 2 5 10 20 50 100 Pulsation period (days) Suppose a Ceoheid...
2、There are two types of Cepheids, called Type I (or classical) Cepheids and Type II Cepheids. Each type has its own period-luminosity relation, as shown on the graph below. 10% 104- W Vir 102- 1.O 2.0 3.0 0.0 1.0 Log Period (days) (a) A galaxy is observed to contain a type I Cepheid of period 30 days and apparent magnitude 20. Find the distance to the galaxy (b) Type I and Type II Cepheids are distinguished by the shape of...
Answer is E but does not show work. I need to see work on how
answer was obtained. Sketch would be helpful as well. Thanks
9. A cube has one corner at the origin and the opposite corner at the point (2m, 2m, 2m). The sides of the cube are parallel to the coordinate planes as shown in the figure below. The electric field (measured in N/c) in and around the cube is given by E 32 - 7zk where...
Need help, please show work. Some correct answers are already
shown. All I need to know is how to work through the problems.
Please show work
3. Consider the following information about Nicaragua Year | CPI inflation | Wage | % Real Real change wage wage in wage base 2014 change adjusted real wage ear cordobas wage 2.50 n/a $737.5 | 766.35 199943.98 n/a 2004 | 59.32 | 34.88% | 3.50 | 4090 200995.48 2014135.07 5.687.67 5.907.97 n/a 3.9% 5.50...
*Show ALL work, answer is given already*
2) A hypothesis will be used to test that a population mean equals 10 against the alternative that the population mean is greater than 10 with unknown variance. What is the critical value (Z a/2) for the test statistic T. for the following significance levels? a = 0.01 and n = 20 critical value > 2.539 a = 0.05 and n = 12 critical value > 1.796 a = 0.10 and n =...
I know the final answer but I need to know all steps please show
work for good rate
Problem 1. A manufacturer has a machine that, when operational at the beginning of a day, has a probability of 0.13 of breaking down sometime during the day. When this happens, the repair is done the next day and completed at the end of that day (a) Formulate the evolution of the status of the machine as a Markov chain by identifying...
Hello I need help with this question. Please answer both questions
and please show all work so I have a better understanding how to
better do this. Thanks please show all work.
Answer both of the following Roman numeral questions (I, II). Equal credit. A company has fixed cost of $44,000, variable cost per unit of S12, and sells its product at S19 each a. What quantity must the firm sell in order to break even? Explain how you reached...
Need help, correct answer is shown. All I need to know is how to
work through the answer. Please show work.
Suppose that nominal GDP increases by 6 percent in a year when real GDP increases by 3 percent. This means that the inflation rate, as measured by the percentage change in the GDP deflator, is approximately percent in that year. × 0.5 ×2
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