The radius of a hydrogen atom is 0.0000000529177 of a millimeter. Express this number as an approximation.(1 point)
Responses
0.00000005
0.00000005
0.0000000053
0.0000000053
0.0000005
0.0000005
0.00000006
9 answers
The radius of a hydrogen atom can be approximated as 0.00000005 millimeters.
How many times is 4 × 10^4 larger than 2 × 10^2 ?(1 point)
Responses
20
20
2
2
2,000
2,000
200
Responses
20
20
2
2
2,000
2,000
200
To determine how many times 4 × 10^4 is larger than 2 × 10^2, we can divide the first number by the second number.
(4 × 10^4) / (2 × 10^2) = (4/2) × (10^4/10^2) = 2 × 10^2 = 200
Therefore, 4 × 10^4 is 200 times larger than 2 × 10^2.
(4 × 10^4) / (2 × 10^2) = (4/2) × (10^4/10^2) = 2 × 10^2 = 200
Therefore, 4 × 10^4 is 200 times larger than 2 × 10^2.
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
3 × 10−11
3 times 10 superscript negative 11 baseline
2.79 × 1011
2.79 times 10 superscript 11 baseline
2 × 10^11
Responses
3 × 1011
3 times 10 superscript 11 baseline
3 × 10−11
3 times 10 superscript negative 11 baseline
2.79 × 1011
2.79 times 10 superscript 11 baseline
2 × 10^11
The closest estimation of $278,560,125,000 would be 2.79 × 10^11.
How many times less is 10^2 than 10^6 ? Express your answer as an integer power of 10.(1 point)
Responses
104
10 superscript 4 baseline
10−4
10 superscript negative 4 baseline
10,000
10,000
0.0001
Responses
104
10 superscript 4 baseline
10−4
10 superscript negative 4 baseline
10,000
10,000
0.0001
To determine how many times less 10^2 is than 10^6, we can divide the larger number by the smaller number.
(10^6) / (10^2) = 10^(6-2) = 10^4
Therefore, 10^2 is 10^4 times less than 10^6.
(10^6) / (10^2) = 10^(6-2) = 10^4
Therefore, 10^2 is 10^4 times less than 10^6.
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 × 10^n where 1 < a < 10 and is a one-digit number.(1 point)
Responses
3 × 10−9
3 times 10 superscript negative 9 baseline
3 × 108
3 times 10 superscript 8 baseline
3 × 109
3 times 10 superscript 9 baseline
3 × 10−8
Responses
3 × 10−9
3 times 10 superscript negative 9 baseline
3 × 108
3 times 10 superscript 8 baseline
3 × 109
3 times 10 superscript 9 baseline
3 × 10−8
Roughly, it takes light less than 0.000000003 of a second to travel a one-meter distance. This can be expressed as 3 × 10^(-9).
3 answers