Answer:
The natural phenomenon used to describe the length of a meter is the speed of light. The length of a meter is the length a light path travels in 1/(299792458) seconds through a vacuum.
The definition is better due to the uncertainty involved in the use of the length of a standard meter stick because the length of the meter stick could change due to atmospheric conditions from place to place
Explanation:
Answer:
400 meters every 20 seconds
Explanation:
1/2 - 3/7 = 7/14 - 6/14 = 1/14
Atomic Number for neon is 10
Mercury exist as liquid at normal earth tempertures
