harpazo
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Section R.2
Algebra Essentials
Michael Sullivan
Textbook: College Algebra Edition 9
How long does it take a beam of light to reach Earth from the Sun when the Sun is 93,000,000 miles from Earth? Express your answer in scientific notation.
Solution:
Let x = speed that light travels through space is at 186,000 miles/second.
Let y = distance from Sun to Earth at 93,000,000 miles
Let T = length of time that it takes light to reach Earth from the Sun.
T = y/x
T = (93,000,000)/(186,000)
T = 500 seconds
It takes light 500 seconds to travel from Sun to Earth.
Express in scientific notation.
5.00 x 10^2
I believe this is right.
Algebra Essentials
Michael Sullivan
Textbook: College Algebra Edition 9
How long does it take a beam of light to reach Earth from the Sun when the Sun is 93,000,000 miles from Earth? Express your answer in scientific notation.
Solution:
Let x = speed that light travels through space is at 186,000 miles/second.
Let y = distance from Sun to Earth at 93,000,000 miles
Let T = length of time that it takes light to reach Earth from the Sun.
T = y/x
T = (93,000,000)/(186,000)
T = 500 seconds
It takes light 500 seconds to travel from Sun to Earth.
Express in scientific notation.
5.00 x 10^2
I believe this is right.