A typical dense core of an interstellar gas cloud has a diameter of 0.2 pc and a mass of 2 solar masses. What is the average density (in kg/m3) of this cloud core? kg/m3   Could this cloud core float on water  (?w = 1,000 kg/m3)? -Yes -No

Q: Consider a disk with disk temperature T = T0(r/AU)−1 with T0 = 200K.and surface density given by Σ =…

A: The objective of this question is to find the difference between the orbital speed of the gas at 1…

Q: If a prostellar disk is 260 au in radius and the disk plus the forming star together contain 7 solar…

A:

Q: What would most bright nebulae look like if there were no interstellar dust?

A: A nebula is defined as a large region of interstellar clouds made of dust, hydrogen, helium, and…

Q: What is the orbital speed at the disk's outer edge in kilometers per second if a protostellar disk…

A:

Q: The dust in a molecular cloud has a temperature of about 34 K. At what wavelength (in nm) does it…

A: temperature = T = 34 K wavelength = λmax=?

Q: If a contracting protostar is seven times the radius of the Sun and has a temperature of only 2030…

A: The luminosity (L) of the contracting protostar relative to the sun be defined as, LL⊙=RR⊙2TT⊙4…

Q: A line charge has a charge density of 10u C/m and its length is 10 cm. The electric flux of this…

A: Given data, Linear charge density, λ=10 μC/m=10-6 C/m. Length of line charge, l = 10 cm = 0.1 m.

Q: If a giant molecular cloud is 73 pc in diameter and a shock wave can sweep  through it at 9 million…

A: Given: The diameter of the giant cloud is d = 73 Pc. The time taken by the shock wave to pass…

Q: A giant molecular cloud is 30 pc in diameter and has a density of 339 hydrogen molecules/cm^3. What…

A: Concept used: Mass is found by multiplying by density and volume of sphere.

Q: Explain why the sky is blue and how that relates to reflection nebulae.

A: Dispersion. Despersion is a phenomena in which when light passes beteen 2 particle it disperses.

Q: If a giant molecular floyd is 73 pc in diameter and a shock wave can sweep through it in 9 million…

A:

Q: If a giant molecular cloud is 60 pc in diameter and a shock wave can sweep through it in 3 million…

A: Given the diameter of a giant molecular cloud is d = 60 pc (Parsec) time taken to sweep the cloud is…

Q: What factors resist the contraction of a cloud of interstellar matter?

A: Interstellar matter is defined as the space between the stars' systems in the galaxy. It is made…

Q: Explain what makes the planetary nebula glow and what makes the supernova remnant glow. Which of…

A: Planetary nebulae and supernova remnants are both glowing celestial objects in space, but they are…

Q: If you assume that a globular cluster 6 arc minutes in diameter is actually 18 pc In diameter, how…

A:

Q: If a protostellar disk is 210 AU in radius and the disk plus the forming star together contain 4…

A: the orbital speed is, v=GMr one solar mass is 1.989×1030 kg and 1 AU is 1.496×1011 m. thus,…

Q: At the average density of a star-forming molecular cloud, about 900 atoms per cm3, determine how…

A: Given:- M=2 times 1030 kg density=900 atoms/cm3= 1.51 times 10-18 kg/m3 Find radius of the sphere…

Q: 1. In this question, you may assume that the core temperature in the Sun is T=15x10$K. L Bolatively…

A:

Q: ar formation, themselves f

A: Newton formulated equations which showed the gravity behavior. He determined the force of gravity…

Q: If you assume that a globular cluster 2 arc minutes in diameter is actually 19 pc in diameter, how…

A: Given, a globular disc cluster is 2 arc minutes in diameter. The actual diameter is d  = 19 pc let D…

Q: A giant molecular cloud is 30 pc in diameter and has a density of 330 hydrogen molecules/cm^3. What…

A:

Q: If the hottest star in the Carina Nebula has a surface temperature of 51,000 K, at what wavelength…

A: Concept: "The Wien's displacement law states that the wavelength carrying maximum energy is…

Q: Observations show that the gas ejected from SN 1987A is moving at about 10,000 km/s. How long will…

A:

Q: At the average density of of a star-forming molecular cloud, about 1180 atoms per cm3, determine how…

A:

Q: If a giant molecular cloud has a mass of 6.7 ✕ 1035 kg, and it converts 9 percent of its mass into…

A: Given data-  Mass of giant molecular cloud m=6.7×1035 kg  It converts 9% of its mass into stars…

Q: c) The star may be assumed to evolve with effective temperature, Teff, remaining constant. Show that…

A: To start, we'll use the equation for the luminosity of a star: where L is the luminosity, R is the…

Q: A giant molecular cloud is 27 pc in diameter and has a density of 380 hydrogen molecules/cm3. What…

A: Given the diameter of the giant molecular cloud is d = 27 pc (parsec) Density of the cloud is 380…

Q: you assume that a globular cluster 4 arc minutes in diameter is actually 27 pc in diameter, how far…

A:

Q: The first stars to form in our galaxy a. had circular orbits. b. had highly elliptical…

A: Population 1 stars are the newer and younger stars.

Q: Based on what you know about the interactions between stars and other interstellar media, select all…

A: Interstellar space and formation of stars Interstellar space is the space between stars. This space…

Q: Why are interstellar lines so narrow?

A: Spectral lines are formed due to electrons making transitions between the energy levels inside the…

Q: If a protostellar disk is 240 AU in radius and the disk plus the forming star together contain 9…

A: Given Radius r = 240 AU Mass m = 9 Solar mass Known Values 1 AU = 1.496 x 1011 m 1 solar mass =…

Q: collapse? if sa

A: High-density molecular clouds have stronger forces of gravity which push in and make it easier to…

Q: describe the characteristics of the various kinds of interstellar gas (HII regions, neutral hydrogen…

A: Star formation is generally more active in the denser, inner part of the Milky Way than in the outer…

Q: What determines the mass distribution of forming stars, the initial mass function (IMF

A: Stars are formed when gas, giant clouds, dust etc. present abundantly in space come together due to…

Q: What temperature would interstellar dust have to have to radiate most strongly at 100 micro meter?

A: When stars die they will slowly send out their outer layers. This forms large clouds of dust and is…

Q: If a circular accretion disk around a 1.4 M. neutron star has a radius of 8.00 x 10° km as measured…

A: Given data: Mass of the Neutron star is, M= 1.4 Ms Where,  Ms - Mass of the sun Therefore, Mass of…

Q: Assuming a mass loss rate of 3*10^-8 solar masses yr^-1 and a stellar wind velocity of 100 km s^-1…

A: Required :  Mass density at the 100 AU