What causes interstellar dust and clouds to condense in the planets and stars

1 answer:

3 0

That would be a nebula, which is an interstellar cloud of hydrogen gas, dust, and plasma. It is the first stage of a star's cycle.

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He was a priest who issued the Grito de Dolores, a call for a peasant rebellion in Mexico.

uranmaximum [27]

It was D. Miguel Hidalgo but i could be wrong..

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3 years ago

How efficient are the small and large scale solar-power systems used in individual homes and industrial settings? What is the en

Leviafan [203]

Answer:

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<em>The potential environmental impacts associated with solar power—land use and habitat loss, water use, and the use of hazardous materials in manufacturing—can vary greatly depending on the technology, which includes two broad categories: photovoltaic (PV) solar cells or concentrating solar thermal plants (CSP).</em>

Explanation:

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3 years ago

A revolutionary war cannon, with a mass of 2090 kg, fires a 16.7 kg ball horizontally. The cannonball has a speed of 113 m/s aft

OLEGan [10]

Answer:

0.90291 m/s

0.45055 m/s

Explanation:

$m_1$ = Mass of canon = 2090 kg

$m_2$ = Mass of ball = 16.7 kg

$v_1$ = Velocity of canon

$v_2$ = Velocity of ball = 113 m/s

In this system the momentum is conserved

$m_1v_1=m_2v_2\\\Rightarrow v_1=\dfrac{16.7\times 113}{2090}\\\Rightarrow v_1=0.90291\ m/s$

The velocity of the cannon is 0.90291 m/s

Applying energy conservation

$\dfrac{1}{2}m_1v_1^2+\dfrac{1}{2}m_2v_2^2=\dfrac{1}{2}m_2v^2\\\Rightarrow m_1v_1^2+m_2v_2^2=m_2v^2\\\Rightarrow v_2=\sqrt{\dfrac{m_1v_1^2+m_2v_2^2}{m_2}}\\\Rightarrow v_2=\sqrt{\dfrac{2090\times 0.90291^2+16.7\times 113^2}{16.7}}\\\Rightarrow v_2=113.45055\ m/s$