10. It takes you 30 minutes to walk one mile. You friend can walk two miles in 6
ID: 148824 • Letter: 1
Question
10. It takes you 30 minutes to walk one mile. You friend can walk two miles in 60 minutes. Which of the following must be true? a. You are walking at a faster rate b. Your friend is walking at a faster rate c. You both are walking at the same rate d. Your friend is walking at a slower rate 11. Two cubes of BTB agar are dropped into the same cup of vinegar at the same time. After ten minutes they are removed and cut open to determine the depth of diffusion of vinegar into the agar. a. If cube X had 10 mm left to go before the entire cube was yellow, and cube Z only had 3 mm to go before the entire cube was yellow, can you tell me which cube was larger? b. Would you say that one cube has a faster rate of diffusion'? If so, which one? If the rates were the same, why did one cube turn yellow faster?Explanation / Answer
10. Answer is c. Both are walking at the same rate
Because you took 30 min for 1 mile your friend took 60 mins for 2 miles and for mile 1 mile your friend took 60/2= 30 min
So both are walking at the same rate.
11. a. Cube X was bigger because it has still 10 mm left .
Beacuse z cube has only 3 mm left means it has 3mm uncovered yellow area but both are placed at same time both should diffuse at same rate but x has 10mm left because it is larger in size than z.
b. No. Both of them have same rate of diffusion
But one cube turns faster yellow than other because it's size is small than the other .because of which it turn yellow another another one is left some un yellow area.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.