I believe the answer is 25*3.5 I apologize if this information is incorrect.<span />
<span>A diameter of 1 atom =2 times the radius of the atom. "pico meters" pm is x10^-12 meters.
Then diameter is 136x10^-12(meters) x 2 = 272x10^ -12 (meters)
And the length to span is = 3.08 (millimeters) = 3.08x10^ -3 (meters)
Divide the length to span over the diameter:
(3.08x10^-3) / (272x10^-12)</span>
The answer is C. <span>copper penny. The other options are not conductors, but rather they are insulators. They do not let electricity to passed by an object. Most of metallic objects are considered as conductors because metals attract with electrons since it is positively charged.</span>
<u>Answers</u>
Question 1
After adding the two numbers together, you will find a number. To determine the number of significant figures, count the digits from right to left. The zeros on the left end and the right end are not significant. The zeros between the non-zero digits are significant.
Question 2
A mete stick is shorter than the student. So by using it, she will be force to take the measurements twice then add then together to get her height. This increases the chances of making errors. To improve the accuracy she should change the measuring instrument and use a tape measure. This will allow her to make only one measurement.
Question 3
Volume = length × width × height
= 105 × 75 × 80.5
= 633,937.5 cm³
In scientific notation;
633,937.5 cm³ = 6.339375 × 10⁵ cm³