How many times brighter is a Cepheid variable of absolute magnitude - 3 (negative 3) than a white dwarf of absolute magnitude +7(positive 7)?
a) 10,000 times brighter
b) 100 times brighter
c) 1,000 times brighter
d) 100,000 times brighter
How many times brighter is a Cepheid variable of absolute magnitude - 3 (negative 3) than...
A quasar has a brightness that corresponds to apparent magnitude 14.6 (Unit 55.4). a. If it is 1.29 billion pc away, how many times brighter than the Sun is it? The quasar is × 1011 times brighter than the Sun. b. How does this compare to the brightness of the Milky Way? Assume that the Milky Way contains about 1011 stars. The quasar is times brighter than the Milky Way.
A particular type II Cepheid variable has a period of 10 days, and an apparent magnitude of 3.2. What is the distance of that Cepheid variable? (Refer to the enclosed figure.) -6 -5 2 -4 -2 0.25 0.63 1.64.0 10.0 25.0 63.1 Period (days) Figure 3.5 Period-Luminosity Relation for Cepheids Harlow Shapley's estimates fitted all Cepheids onto one curve (solid white line), with luminosity increasing for the longer-period variables. Walter Baade divided Cepheids into two classes, Population (solid black line)...
Star A is 4 times brighter than Star B. How many times hotter is Star A than Star B?
Star A is 3.2 times hotter than Star B. How many times brighter is Star A than Star B?
Rotation 6) How many times brighter is -4.5 magnitude Venus over-1.5 Sirius. Show your work. -4.s -1.5 =-3 (2.5) 3 = .oby 7) What is the Period for the planets A-E? Show your work. 8) a) What is the orbital eccentricity of Planet D and E? Show your co work. b) What is the most-likely e value of Planets A, B, and C?
How many times is the loop body of the while statement executed? a. once b. forever C. 49 times d. 50 times e. until a number 50 or larger is entered The value stored in variable s at the end of the execution of the loop could best be described as: a. the average of the numbers scanned b. the sum of the numbers scanned c. the largest of the numbers scanned d. how many numbers were scanned e. the sentinel value The value stored in variable z at the end of the...
A galaxy is a large grouping of stars. Approximately how many stars are in the Milky Way galaxy? A: 200,000 B: 200 million C: 200 billion Which of the following best describes the sun at the present time? A: it is a red giant B: it is a main sequence star C: it is a white dwarf A unit used to measure the brightness of a star is: A: an apparent magnitude B: mass C: eccentricity the energy source for...
particle size e. color How many 100 mg tablets can be produced from 100 kg of a pharmaceutical product? Select one o 2 1,000 b. 10,000 c. 100,000 d. 1,000,000 e. 10,000,000 Identify the incorrect statement (s). A pure substance can be
Q3 3. How many solutions, in non-negative integers a, b and c, are there to the linear equation a+b+c 73 with the restrictions a 2 30, b 30, and 10 7 Marks cs 30? Find the general solution of the recurrence: un-4un-13 x 4". 4. [8 Marks] 3. How many solutions, in non-negative integers a, b and c, are there to the linear equation a+b+c 73 with the restrictions a 2 30, b 30, and 10 7 Marks cs 30?...
2. How many positive integers less than 1000 are multiples of 5 or 7? Explain your answer using the inclusion-exclusion principle 3. For the purpose of this problem, a word is an ordered string of 5 lowercase letters from the English alphabet (i.e., the 26 letters from a to z). For example, "alpha" and "zfaxr" are words. A subword of a word is an ordered string that appears as consecutive letters anywhere within the given word. For example, "cat" is...