Question

1. We observe an interstellar cloud, with temperature T = 80 K and neutral hydrogen density nH = 10^8 m^-3, at a distance d = 100 pc. Suppose that the cloud is spherical and that the column density of neutral hydrogen atoms through its middle is NdH = 1.5 x 10^24 m^-2. (a) What is the diameter of the cloud? (b) How many neutral hydrogen atoms are in the cloud? (c) What is the mass of the cloud (in units of Mo)?

          1. We observe an interstellar cloud, with temperature T = 80 K and neutral hydrogen density nH = 10^8 m^-3, at a distance d = 100 pc. Suppose that the cloud is spherical and that the column density of neutral hydrogen atoms through its middle is NdH = 1.5 x 10^24 m^-2.

(a) What is the diameter of the cloud?
(b) How many neutral hydrogen atoms are in the cloud?
(c) What is the mass of the cloud (in units of Mo)?

1. We observe an interstellar cloud, with temperature T = 80 K and neutral hydrogen density nH = 10^8 m^-3, at a distance d = 100 pc. Suppose that the cloud is spherical and that the column density of neutral hydrogen atoms through its middle is NdH = 1.5 x 10^24 m^-2.

(a) What is the diameter of the cloud?
(b) How many neutral hydrogen atoms are in the cloud?
(c) What is the mass of the cloud (in units of Mo)?

Added by Brianna A.

University Physics with Modern Physics

Hugh D. Young 14th Edition

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Solved by Expert Kratika Bhadauria

09/08/2023

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1. We observe an interstellar cloud, with temperature T = 80 K and neutral hydrogen density nH = 10^8 m^-3, at a distance d = 100 pc. Suppose that the cloud is spherical and that the column density of neutral hydrogen atoms through its middle is NdH = 1.5 x 10^24 m^-2. (a) What is the diameter of the cloud? (b) How many neutral hydrogen atoms are in the cloud? (c) What is the mass of the cloud (in units of Mo)?