Answer:
a2 = 3a1
Explanation:
Detailed explanation and calculation is shown in the image below
Answer:
The importance of international bureau of weights and measures are;
1. to bring unification of measurement system.
2. to establish and preserve fundamental international prototypes.
3. to verify national standards, etc.
Answer:
In terms of distance, average speed is 20 km/h
In terms of displacement, average speed is 0 km/h.
Explanation:
Total distance:

Total time is 3.0 hours
but:

In terms of distance.
substitute:


In terms of displacement:

bonded pairs of electrons, lone pairs of electrons.
The spine is the one that keeps a huminss body mantaned