Data Tables Table 1: Results from Balance Laboratory Pennies BeforeM Minting Dat
ID: 575159 • Letter: D
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Data Tables Table 1: Results from Balance Laboratory Pennies BeforeM Minting Date Pennies After | Minting Date 1981 Mass (g) Penny#1 -11979 Penny # 2 | 1977 Penny i13-11974 Penny # 4 | 1262 | lisal I Penny #1 | 2003 | 31183|| Penny #212 13.lo9al Penny # 3 l 19,2 |2.937-| Penny # 4 |1932 | 2 ."R a 2 u,S3 | 2 2. 4489 Sum of the individual masses of pennies minted before 1981 Sum of the individual masses of pennies minted after 1983 era 9.979 Average mass of Average mass of the four pennies minted before 1981 minted after 19895 Combined mass of ll permies minted12.38minted after 19 Combined mass of the 4 pennies minted after 1983. before 1981 Place all four pennies on the balance pan at once. Type or answer the questions on a separate sheet of paper. Question 1: A 5 gram weight is placed on a balance, which answer is correct and why? C. 4.91g D) 4910g beconse,itis closer numbvr to , why would 4.900 be incorrect? A. 4 g B. 4.9g Question 2: Given your answer to the Question I Question 3: From the average values of pennies minted before 1981 compared to those minted after 1983, can you see a significant difference in the minted pennies by mass alone? Comment on any differences you may have observed. nies afe Question 4: Does the total mass of pennies massed together equai the sum of the individual pennies? Explain fully!Explanation / Answer
2) because 4.910 is closest to 5...and 4.9 is not that much close..
4)No , combined mass of all pennies will also include some impurity hence it will be greater than sum of 4 individual pennies
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