A star too small and cold to shine has been found by S.Kulkarnietal. (Science270, 1478 (1995)). The spectrum of the object shows the presence of methane, which, according to the authors, would not exist at temperatures much above 1000 K. The mass of the star, as determined from its gravitational effect on a companion star, is roughly 20 times the mass of Jupiter. The star is considered to be a brown dwarf, the coolest ever found.
(a) From available thermodynamic data, test the stability of methane at temperatures above 1000 K.
(b) What is λmax for this star?
(c) What is the energy density of the star relative to that of the Sun (6000 K)?
(d) To determine whether the star will shine, estimate the fraction of the energy density of the star in the visible region of the spectrum.
The difference between the cost of capital and the internal rate of return (IRR) is the max amount of estimation error in the cost of capital estimate thatNov 27 2017
In economics, if a good is inelastic,1. consumers have lost interest in purchasing it.2. producers have lost interest in manufacturing it.3. its supply or demand is too s...Jun 11 2021
the maybe pay life insurance co is trying to sell you an investment policy that will pay yu and your heirs $40,000 per year forever. if the required return on this invest...Dec 01 2019
Suppose that the Internal Revenue Service will audit 20% of income tax returns reporting an annual gross income of over $80,000. What is the probability that of 15 such...Aug 03 2020
Navistar International Corporation is an American company that mostly manufactures the big commercial trucks we typically see on the highway. Despite its being an America...Apr 17 2020
when Jamie, a U.S. citizen, purchases a wool jacket made in Ireland, the purchase isa. both a U.S. and Irish import.b. a U.S. import and an Irish export.c. a U.S. export ...Jun 01 2021
Public Goods and Public Choice Graded Assignment Attempts Average: 12 1. Categories of goods Complete the following table by selecting the appropriate definition for each...Jul 06 2021
Find the domain of the given function. n f(n) = 8- 2n Select the correct choice below and fill in the answer box within your choice. OA. O (Simplify your answers.) OBO (S...May 10 2021
Homework Assignment #8 Name: __________________________ All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel. U...Aug 04 2020
Adams Enterprises had the following events occur during a recent month. For each event, determine which of the categories in the firm's accounting system would be cha...Dec 25 2019