# Calculating the Product of Two Scientific Notation Numbers

## Explanation:

**To calculate the product of 6.626 Ã 10â»Â³â´ J Â· s and 2.9979 Ã 10â¸ m/s**, we need to multiply these two values. The multiplication of numbers in scientific notation involves multiplying the numbers and adding the exponents of 10.

Let's calculate it step by step:

**Multiply the significant figures:** 6.626 Ã 2.9979 = 19.8675094.

**Add the exponents of 10:** (-34) + (8) = -26.

**Combine to create the final answer in scientific notation:** 19.8675094 Ã 10â»Â²â¶.

Since the answer should be in normalized scientific notation (where the significant figure is between 1 and 10), we adjust the significant figures to two decimal places and adjust the exponent accordingly to get 1.987 Ã 10â»Â²âµ J Â· m/s. Rounding this off matches it to the answer choice of 1.986 Ã 10â»Â²âµ J Â· m/s given.