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stiks02 [169]
3 years ago
6

According to astronomers, how many galaxies are distributed across the observable universe?

Physics
2 answers:
Allushta [10]3 years ago
7 0

Answer:actually it's 120 billion so you can choose 100 billion

Explanation:

Kay [80]3 years ago
4 0
B: 1 trillion distributed across the universe. If I remember correctly.
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60m

Explanation:

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Who was the scientist who gave us the laws of motion?.
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Answer:

Isaac Newton

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Monochromatic light from a distant source is incident on a slit 0.750 mm wide. On a screen 2.00 m away, the distance from the ce
jasenka [17]

Answer:

\lambda= 506.25 nm

Explanation:

Diffraction is observed when a wave is distorted by an obstacle whose dimensions are comparable to the wavelength. The simplest case corresponds to the Fraunhofer diffraction, in which the obstacle is a long, narrow slit, so we can ignore the effects of extremes.

This is a simple case, in which we can use the Fraunhofer single slit diffraction equation:

y=\frac{m \lambda D}{a}

Where:

y=Displacement\hspace{3}from\hspace{3} the\hspace{3} centerline \hspace{3}for \hspace{3}minimum\hspace{3} intensity =1.35mm\\\lambda=Light\hspace{3} wavelength \\D=Distance\hspace{3}between\hspace{3}the\hspace{3}screen\hspace{3}and\hspace{3}the\hspace{3}slit=2m\\a=width\hspace{3}of\hspace{3}the\hspace{3}slit=0.750mm\\m=Order\hspace{3}number=1

Solving for λ:

\lambda=\frac{y*a}{mD}

Replacing the data provided by the problem:

\lambda=\frac{(1.35\times 10^{-3})*(0.750\times 10^{-3})}{1*2} =5.0625\times 10^{-7}m =506.25nm

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3 years ago
A kettle full of water is brought to a boil in a room with temperature 20°c. after 15 minutes the temperature of the water has
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