Express the following quantities in the scientific notation:
According to NASA, Mars is 225,000,000 km from the Sun at its closest point.
scientific notation needs to re-written as 2.25x10 to a power. exponents always confuse me, but my answer has to equal 225,000,000. so 10 to the second power is 100. it also has 2 zeroes after the one. 1000 is ten to the hird power (3 zeroes after the ones. 100,000,000 would therefore be 10 to the 8th power. so, the answer is 2.25 x 10 to the eighth power :)
http://www.nyu.edu/pages/mathmol/textbook/scinot.html
225,000,000 in scientific notation
To express the distance between Mars and the Sun in scientific notation, follow these steps:
1. Start by writing down the given distance: 225,000,000 km.
2. To convert it into scientific notation, we need to move the decimal point so that there is only one non-zero digit to the left of the decimal point. In this case, we have 225,000,000, which needs to be rewritten as 2.25000000.
3. Next, count the number of places the decimal point moved from the original number to the rewritten number. In this case, the decimal point moved 8 places to the left.
4. Finally, express the number as a product of a coefficient between 1 and 10, multiplied by 10 raised to the power of the number of places the decimal point moved. Therefore, the distance between Mars and the Sun can be expressed in scientific notation as 2.25 x 10^8 km.