Question

Because quantum mechanics is physics that describes the interactions of very small objects (i.e. molecules, atoms, and electrons), this week you will need to know how to multiply very small numbers. Remember that scientific notation writes very small or large number in terms of powers of 10. For example, .0008 can be written in scientific notation as 8 x 10-4 or as 8E-4. The power of 10 (-4 in this case) tells you to take the number 8.0 and move the decimal 4 places to the left giving us .0008. Which is a correct representation of .000025 in scientific notation?

Answer 1

Ha! Lot of words but the question itself is easy.
The answer is 2.5 times 10 to the 5th power.
The main part of the numbers has the decimal point placed after the first digit.
Then for what number of power, you just count the number of decimal places moved.
I hope this helps you.

Answer 2

Explanation :

Scientific notation writes very small or large number in terms of powers of 10. Quantum mechanics is the branch of physics in which we deal with the interactions of very small objects (i.e. molecules, atoms, and electrons).

For this we need to know how to multiply very small numbers.

For example, 0.0008 can be written in scientific notation as $8\times 10^{-4}$. Here, the power of 10 (-4 in this case) tells us to take the number 8.0 and move the decimal 4 places to the left giving us 0.0008.

0.000025 can be written in scientific notation as $2.5\times 10^{-5}$.

Hence, this is the required solution.