1)
average velocity:
(3,9)
(6,36)
average velocity=(36-9)m/(6-3) s=27m/3s=9 m/s
Answer: 9 m/s, east.
2)
(12, 144)
(15,225)
average velocity=(225-144)m/(15-12)s=81 m/3s=27 m/s
Answer: 27 m/s,east.
c.
Explanation:
I mainly think its c. from my point of view because as yoy can see they showed observations and explained certain information and they didnt conclude it as it's TRUE they said theories meaning its and Idea and something that is not fully proven happend.
empirical formula is the simplest ratio of whole numbers of components making up a compound
molecular formula is the actual number of components making up the compound
there can be many compounds having the same empirical formula
given options
1. C₂H₆ and C₄H₁₂
ratio of C to H in C₂H₆ - 2:6 --> 1:3
C₄H₁₂ - 4:12 --> 1:3
the simplified ratios for both are same
therefore both have same empirical formulas
2. C₃H₆O₃ and C₂H₄O₂
ratio of C to H to O in C₃H₆O₃ - 3:6:3 --> 1:2:1
C₂H₄O₂ - 2:4:2 --> 1:2:1
both have same empirical formulas
3. C₃H₈O and CH₂O
ratio of C to H to O in C₃H₈O - 3:8:1
CH₂O - 1:2:1
the 2 ratios of atoms are different which means they have different empirical formulas
4. C₂H₈ and CH₄
ratio of C to H in C₂H₈ - 2:8 --> 1:4
CH₄ -- 1:4
2 ratios are same so same empirical formula
correct answer is 3. C₃H₈O and CH₂O they do not share the same empirical formula