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3 years ago

A fragment of a collapsing gas cloud that comes to equilibrium with a central temperature of 4 million k will become a:

Physics

1 answer:

Liono4ka [1.6K]3 years ago

4 0

If there's enough Hydrogen in the cloud, then fusion reactions
will ignite in the core, and it'll become a star.

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Someone just help me

Zanzabum

C according to my calculations

3 0

2 years ago

Calculate the ionization potential for C+5 ( 5 electrons removed for the C atom) and in addition compute the wavelength of the t

sveta [45]

Answer:

Ionization potential of C⁺⁵ is 489.6 eV.

Wavelength of the transition from n=3 to n=2 is 1.83 x 10⁻⁸ m.

Explanation:

The ionization potential of hydrogen like atoms is given by the relation :

$E = \frac{13.6Z^{2} }{n^{2} } eV$ .....(1)

Here E is ionization potential, Z is atomic number and n is the principal quantum number which represents the state of the atom.

In this problem, the ionization potential of Carbon atom is to determine.

So, substitute 6 for Z and 1 for n in the equation (1).

$E = \frac{13.6\times(6)^{2} }{1^{2} }$

 E = 489.6 eV

The wavelength (λ) of the photon due to the transition of electrons in Hydrogen like atom is given by the relation :

$\frac{1}{\lambda} =RZ^{2}[\frac{1}{n_{1} ^{2}}-\frac{1}{n_{2} ^{2} }]$ ......(2)

R is Rydberg constant, n₁ and n₂ are the transition states of the atom.

Substitute 6 for Z, 2 for n₁, 3 for n₂ and 1.09 x 10⁷ m⁻¹ for R in equation (2).

$\frac{1}{\lambda} =1.09\times10^{7} \times6^{2}[\frac{1}{2 ^{2}}-\frac{1}{3 ^{2} }]$

$\frac{1}{\lambda}$ = 5.45 x 10⁷

λ = 1.83 x 10⁻⁸ m

7 0

3 years ago

Technician A says test lights are great for quick tests on non-computerized circuits. Technician B says you can use a test light

Tpy6a [65]

Answer:

that technician A is right

Explanation:

The test lights are generally small bulbs that are turned on by the voltage and current flowing through the circuit in analog circuits, these two values are high and can light the bulb. In digital circuits the current is very small in the order of milliamps, so there is not enough power to turn on these lights.

From the above it is seen that technician A is right

4 0

3 years ago

A 1/40 scale model is to be used in a towing tank to study the water motion near the bottom of a shallow channel as a large barg

nadezda [96]

Answer:

I t hi ink the answer is a

Explanation:

I hoped this helpes

5 0

2 years ago

If you were on earth monitoring a person in a rocket ship traveling away from the earth at a speed close to the speed of light,

m_a_m_a [10]

Answer:

There wiil be a reduction in pulse and volume will be reduced

Explanation:

This is due to the relastivistic Doppler effect

6 0

3 years ago