Answer:
Explanation:
The mass of an electron is small compared to the neutron and proton, so it's negligible. It's like adding zero to a number.
Answer: The 5 uses of mechanical energy are: 1) Hammering a nail
2) Using Dart gun 3) Moon 4) Hydropower plant 5) Sharping a pencil.
Answer:
The maximum velocity that can be used while still maintaining laminar flow is

Explanation:
The explanation is shown on the first and second uploaded image
The colour of the star and the brightness.