The estimated masses of a proton and an electron are 1.67 x 10-24 grams and 9.11 x 10-28 grams, respectively. Find the ratio to three significant digits of the mass of the proton to the mass of the electron.

Question

The estimated masses of a proton and an electron are 1.67 x 10-24 grams and 9.11 x 10-28 grams, respectively.  Find the ratio to three significant digits of the mass of the proton to the mass of the electron.

anonymous · Answer

1.67 x 10-24 grams
9.11 x 10-28 grams

Step 1 Covert numbers to have the same number of deciamls in the sci notation. IE so they are on the same scale.

9.11 x 10-28 = ???9.11 x 10-24
0.000 000 000 000 000 000 000 000 000 911 =
0. 000 911 x 10-24 


.000911 x 10-24 / 1.67 x 10-24


5.46E-04 = .000546 times smaller

nurali · Answer

http://www.algebra.com/algebra/college/linear/Linear_Algebra.faq.question.321027.html