Question

(1) a. Show explicitly that for very massive stars (opacity dominated by Thompson scattering, pressure from...

(1) a. Show explicitly that for very massive stars (opacity dominated by Thompson scattering, pressure from radiation) that luminosity is proportional to mass.

b. Show explicitly that for moderately massive stars (opacity dominated by Thompson scattering, pressure from gas) that luminosity is proportional to mass cubed.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Show explicitly that for moderately massive stars (opacity dominated by Thompson scattering, pressure from gas) that...
Show explicitly that for moderately massive stars (opacity dominated by Thompson scattering, pressure from gas) that luminosity is proportional to mass cubed.
When quasars were first discovered, why did astronomers conclude they were very distant objects? A. They...
When quasars were first discovered, why did astronomers conclude they were very distant objects? A. They were obviously in galaxies known to be very distant B. They had high redshifts C. They were extremely bright D. They were surrounded by very old stars 10 points    QUESTION 7 What is a tidal tail? A. A jet of hot plasma emitted by an active galactic nucleus B. A stream of stars resulting from a galactic merger event C. A dust lane...
1. The visible region of the sun is known as a. corona b. photosphere c. radiation...
1. The visible region of the sun is known as a. corona b. photosphere c. radiation zone d. chromosphere 2. The average temperature of that part of the sun, which we see, is (a) 6000 k (b) 60,000 k (c) 600 k (d) 15 million k 3. Granulation of the sun is caused by a. sunspots b. prominences c. convection d. radiation 4. Convection zone is located a. next to the core b. between radiation zone and photosphere c. between...
1. Inside a Red Giant, denser elements fuse and emit sufficient energy to balance thermal expansion...
1. Inside a Red Giant, denser elements fuse and emit sufficient energy to balance thermal expansion versus gravity, until fusion of: silica & sulphur helium carbon & oxygen iron deuterium & tritium 2. Structure of the Universe: 2dF and the Sloan Microwave Digital Survey plotted clusters of galaxies. What kind of structure was seen among super-clusters of galaxies? Filaments of galaxies surround voids that have no or very few galaxies inside. Super-clusters expand outward from a Big Bang source. Super-clusters...
The Lagoon Nebula (the figure (Figure 1)) is a cloud of hydrogen gas located 3900 light-years...
The Lagoon Nebula (the figure (Figure 1)) is a cloud of hydrogen gas located 3900 light-years from the earth. The cloud is about 45 light-years in diameter and glows because of its high temperature of 7500 K. (The gas is raised to this temperature by the stars that lie within the nebula.) The cloud is also very thin; there are only 80 molecules per cubic centimeter. a. Find the gas pressure (in atmospheres) in the Lagoon Nebula. b. Science fiction...
Nitrogen is fed from a high pressure cylinder, through 1/4 inch ID stainless steel tubing, to...
Nitrogen is fed from a high pressure cylinder, through 1/4 inch ID stainless steel tubing, to an experimental unit. The line ruptures at a point 10 ft from the cylinder. If the pressure of the nitrogen in the cylinder is 2200 psig and the temperature is 70°C a) Use the ideal gas law to calculate the density of gas in the tank b) What is the mass flow rate of the gas through the line? c) Is the flow choked?...
Cracking of ethane is very big business, as can be seen from the construction of the...
Cracking of ethane is very big business, as can be seen from the construction of the Shell cracker plant just outside Pittsburgh. The basic reaction is C2H6  = C2H4 + H2 (a) Compute the heat of reaction and the Gibbs free energy of reaction and the equilibrium constant at standard conditions using the data in Koretsky (b) Write down the expression for the equilibrium constant in terms of the extent of reaction and the system pressure, assuming ideal gas behavior. Assume...
1) A hot air balloon consists of a very large bag filled with heated air at...
1) A hot air balloon consists of a very large bag filled with heated air at 120.0 °C produced from a propane burner. It has a basket hanging under it in which several people can ride. The average hot air balloon has a volume of 2.80 × 103 m3 when fully inflated. a) Determine the work (in kJ) needed to inflate the balloon under an external air pressure of 1.00 atm. b) The specific heat of the air found in...
1) Describe an example of each of the following that may be found of your kitchen:...
1) Describe an example of each of the following that may be found of your kitchen: Explain how your choice falls into this category, and if there is a chemical name or symbol for it, provide that as well. Provide a photo of your example with your ID card in it. a) a compound b) a heterogeneous mixture c) an element (symbol) Moving to the Caves… Lechuguilla Caves specifically. Check out this picture of crystals of gypsum left behind in...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT