The radius of a hydrogen atom is 0.0000000529177 of a millimeter. Express this number as an approximation.(1 point) Responses 0.0000000053 0.0000000053 0.00000006 0.00000006 0.00000005 0.00000005 0.0000005 0.0000005

Answer 1

0.000000053

Answer 2

How many times is 4 × 104 larger than 2 × 102 ?(1 point) Responses 20 20 200 200 2 2 2,000

Answer 3

200

Answer 4

At the end of fiscal year 2004, the federal debt of Country C is $278,560,125,000. What is the closest estimation of this amount? Express your answer in the form of a single digit times an integer power of 10.(1 point) Responses 3 × 1011 3 times 10 superscript 11 baseline 2 × 1011 2 times 10 superscript 11 baseline 2.79 × 1011 2.79 times 10 superscript 11 baseline 3 × 10−11 3 times 10 superscript negative 11 baseline

Answer 5

2.79 × 10^11

Answer 6

How many times less is 102 than 106 ? Express your answer as an integer power of 10.(1 point) Responses 10,000 10,000 0.0001 0.0001 104 10 superscript 4 baseline 10−4 10 superscript negative 4 baseline

Answer 7

10^4

Answer 8

Roughly, it takes light less than 0.000000003 of a second to travel a one-meter distance. Express this number in the form of a × 10n where 1 < a < 10 and is a one-digit number.(1 point) Responses 3 × 10−8 3 times 10 superscript negative 8 baseline 3 × 10−9 3 times 10 superscript negative 9 baseline 3 × 109 3 times 10 superscript 9 baseline 3 × 108

Answer 9

3 × 10^-9