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Virty [35]
3 years ago
9

What is a star? What is our biggest and closest star? (Btw i wasn't sure if this was Physics.)

Physics
2 answers:
sweet-ann [11.9K]3 years ago
8 0

Answer:

A star is an astronomical object consisting of a luminous spheroid of plasma held together by its own gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night, but due to their immense distance from Earth they appear as fixed points of light in the sky

Explanation:

Georgia [21]3 years ago
3 0

Answer: Proxima Centauri, the closest star to our own, is still 40,208,000,000,000 km away. (Or about 268,770 AU.)

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3 years ago
Structures on a bird feather act like a diffraction grating having 8000 8000 lines per centimeter. What is the angle of the firs
sammy [17]

Answer:

Angle of first order maximum, \theta=21.19^{\circ}

Explanation:

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d=\dfrac{1}{N}

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The equation of grating is given by :

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