Answer:
0.2 cm
Explanation:
looking at the ruler, you can see that the diameter is 0.4 cm. to get the radius, just divide by two, which gets 0.2 cm as the radius
Answer:
bro please rotate it and send again please
C. Include changes that alter the identity of a substance.
If the results of the experiment on repeating are not same, it shows the results are not standard, there are some factors, which are not constant
Answer:The nucleus contains two types of subatomic particles,
protons and neutrons.
Explanation:The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus.
