One second =? Light year =? Astronomical unit =? Kilometer =? Meter =? Centimeter must be accurate!

One light year is about 10 trillion kilometers, and one astronomical unit is 150 million kilometers. When one year is 365 days, 5 hours, 48 minutes, 45.9747 seconds, light speed is 299792458 meters / second, one light year is 94607304725800.8126 meters

Light year is the unit of distance in astronomy. One light year is about 9 & nbsp; 500 & nbsp; 000 & nbsp; 000 & nbsp; 000 km, which can be expressed as______ ．

The answer is: 2 000 × 1019.5 000

Light year is the unit of distance in astronomy. One light year is about 9 & nbsp; 500 & nbsp; 000 & nbsp; 000 & nbsp; 000 km, which can be expressed as______ ．

9 500 000 = 9.5 × 1012, so the answer is: 9.5 × 1012km

What is the relationship between frequency, wavelength and speed of light?

Look at the picture

RELATED INFORMATIONS

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2. Can Maxwell's equations deduce the principle of invariable speed of light? In Baidu Encyclopedia, it is said that the principle of invariable speed of light is obtained by solving Maxwell's equations. Is that right? If so, why did scientists at that time think that there was ether and that the speed of light was variable
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