9.8 x 108
In a vacuum, light travels about 3,725,648 miles every 20 seconds. In scientific notation this distance is expressed as: 3.725648 x 106 miles per 20 seconds.
3.504 × 10^7 km
(Six hundred divided by one hundred) seconds
In this case, you find the answer by stating the question more precisely. That number already is an approximation of the speed of light in inches per second, so we're not sure what you need for the blank. It's possible this is an exercise in scientific notation, which would be 1.1802 x 1010
Usually makes it easier to read and reduces the risk of error.For example, consider the following:The average distance from the earth to the sum is 149.6 million kilometres.In space light travels at 300,000 km per second.Given that Time = Distance/Speed, how long does light take to get from the sun to the earth?You could try 149600000/300000 and hopefully not get into a tangle with the 0s.Or you could go forDistance = 149.6 million = 149.6*106 = 1.496*108 kmSpeed = 300000 = 3*105 km s-1.So time = 1.496*108 / 3*105 seconds = 1.496/3 * 103 = 4.99*102 seconds or 499 seconds.
300,000 km/s in Scientific Notation = 3 x 105km/s
5.8786 x 1012 miles (rounded)
In a vacuum, light travels about 3,725,648 miles every 20 seconds. In scientific notation this distance is expressed as: 3.725648 x 106 miles per 20 seconds.
3.504 × 10^7 km
The Great Galaxy in Andromeda (also known as the Andromeda Galaxy or M31) is about 2.5 million light years from Earth. When we look at this galaxy today, we see light that has been traveling through space for 2.5 million years; i.e. when we look at the Andromeda Galaxy, we are seeing it as it was about 2.5 million years ago! Think about this, we are looking back in time.1 light year is the distance that light travels in 1 year. Speed of light is 300,000 kilometers/second, find the distance that light travels from the Andromeda Galaxy to Earth in kilometers and express it in scientific notation.
The light travels at the speed of light which is just under 3 hundred million meters per second
So they can reduce those really big numbers into really small numbers, such as 968,000 times 10 which can be noted as 9.68 times 105.They use scientific notation in the same way as other scientists use scientific notation.
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