The distance from New York to Los Angeles is about 4000km and should take about 40 h in a car driving at 100 km/h. (a) How much shorter than 4000km is the distance according to the car travelers? (b) How much less than 40 h do they age during the trip?
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We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.
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It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.
The distance from New York to Los Angeles is about
4000km and should take about 40 h in a car driving at
100 km/h. (a) How much shorter than 4000km is the distance
according to the car travelers? (b) How much less
than 40 h do they age during the trip?
The distance from New York to Los Angeles is about
4000km and should take about 40 h in a car driving at
100 km/h. (a) How much shorter than 4000km is the distance
according to the car travelers? (b) How much less
than 40 h do they age during the trip?
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