Answer:
C.
Explanation:
It requires work to stretch or compress a spring.
1. true
2. false
3. false
4. true
5.false
6. It's true but can be false because a change in state can be a physical change as well.
Answer:el número de masa es la suma de los protones y neutrones en un átomo y el número atómico es sólo el número de protones.
Explanation:
Answer:
Explanation:
Mean of observation of A = 87.63
Mean of observation of B = 87.06
Mean of observation of C=87.76
So reading of B is closest to true volume hence his result is most accurate. Reading of C is least accurate.
As far as precision of measurement is concerned, it depends upon measuring instrument. From the reading it appears that the measuring instrument is the same because the no of significant figure of the reading is same ( three) . Hence their reading are equally precise.