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Measurements in Sci. Not.

 

Express each of the following measurements in scientific notation.

 

Speed of light in a vacuum, 299 792 458 m/s

 

Number of seconds in a day, 86 400 s

 

Mean radius of Earth, 6378 km

 

Density of oxygen gas at 0ºC and pressure of 101 kPa, 0.001 42 g/mL

 

Radius of an argon atom, 0.000 000 000 098 m

 

 

angelangel?

 Sep 22, 2016

Best Answer 

 #4
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+9

Speed of light in a vacuum, 299 792 458 m/s

 

Take this first question: start counting from the RIGHT until you get to the last digit, which is a 2. Don't include the last digit(2) in your counting. If you did that, you should get 8 numbers. This 8 will be the "exponent" of 10 as follows:299 792 458 =2.99792458 x 10^8. Or you could abbreviate it like this:

3.00 x 10^8. This is called scientific notation. Try the others and see how you do.

 Sep 22, 2016
 #2
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Rosey, I could givie you the answers, but you wouldn't learn anything.....here's a simple-to-understand tutorial :

 

http://www.mathsisfun.com/numbers/scientific-notation.html

 

Try a few of your questions yourself and see how you do........there is a calculator on the above page that lets you check your answers.......

 

 

 

cool cool cool

 Sep 22, 2016
 #3
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0

Well my teacher told me to go to this site if i have any trouble with my questions.

And told me to only go to this site and i don't want to get into any trouble soo... thats why i'm posting questions on here, and also my teacher is a subsitute and we are not allowed to use calculators in class, only at home.

Rosey_Wolf4  Sep 22, 2016
 #4
avatar
+9
Best Answer

Speed of light in a vacuum, 299 792 458 m/s

 

Take this first question: start counting from the RIGHT until you get to the last digit, which is a 2. Don't include the last digit(2) in your counting. If you did that, you should get 8 numbers. This 8 will be the "exponent" of 10 as follows:299 792 458 =2.99792458 x 10^8. Or you could abbreviate it like this:

3.00 x 10^8. This is called scientific notation. Try the others and see how you do.

Guest Sep 22, 2016

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