Kyra and Pari are timing how long it takes for 1 g of sugar to dissolve in hot water. Kyra records a time of 24.3 seconds. Pari records a time of 24 seconds. Whose reading is more precise? Why?

we can say that:-A reading with more no of significant figures is considered to be more precise.Kyra recorded a reading of 24.3 sec. Since all non 0 digits are considered to be significant this reading has 3 significant figures.Pari recorded a reading of 24 sec. Since all non 0 digits are considered to be significant this reading has 3 significant figures.hence we can say that kyra's reading has more significant figures nd so it is more precise.

Answerthe distance between the two ends of the galaxy is 150,000 light years;

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