Question

the following items are available for use in a pan balance to measure the weight of a large rock. which items will yield the greatest level of accuracy, that is, approximate the true weight of the rock with the least error? you may only use items of the kind selected, and may not mix items. a. shoes b. baseballs c. footballs d. marbles

Explanation:

To measure the weight of a large rock with the greatest accuracy (least error) using a pan - balance and only one type of item, we need to consider the size and uniformity of the items. Smaller items (in terms of individual weight) will allow for a more precise measurement as they can be added or removed in smaller increments. Marbles are much smaller in weight compared to shoes, baseballs, and footballs. So, using marbles will give a more accurate measurement as we can fine - tune the balance more precisely.

Answer:

D. Marbles