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Quiz+1+solution

# Quiz+1+solution - October1,2010 1 mile.M,...

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Quiz 1 Physics 2 Section C October 1, 2010 1) M can run 3 miles in the time it takes J to run 2 miles and K to run 1 mile. M, J and K take part in a long distance relay where each person runs 1 mile. They finish the race in 33 minutes. How long does J take to run ONE mile? Let time for M to run 3 miles be T Then M takes T/3, J takes T/2 and K takes T to run a mile T/3+T/2+T = 33 minutes T=18 minutes J takes 9 minutes to run one mile 2) M has a partially filled container of water with some special chemical called TLAS dissolved in it. She is about to measure the concentration of this chemical when J pours distilled water that has no TLAS into the container. (J and M hate each other if you must know.) Luckily M sees that J has poured a full ONE‐liter bottle of distilled water into the beaker. M measures the volume of liquid in the beaker to be 2.5L after J does her deed. She measures the concentration of TLAS in this 2.5L to be 1.5%. What was the concentration of TLAS in the original sample?

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Quiz+1+solution - October1,2010 1 mile.M,...

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