Which of the following units would be the most appropriate for measuring the mass of a paper clip? a. grams b. milligrams c. centigrams d. kilograms

For this case we have that a paper clip is a very small object, to be taken in the hand we feel that its mass is very small, almost imperceptible.

For this reason we can discard option D and option A.

Being so small we can use the milligrams to measure its mass, it is the smallest scale.

Option B

as technology advances, new experiments often expose problems in accepted theories. c

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-lavira: )

uranium fissions/breaks up giving out energy and neutrons