There is no theoretical OR observational evidence for that statement.
Answer:
0.00001 %
Explanation:
The distance from satellite = 20000 km
Position range = 2 m
The percentage uncertainty is given by dividing the distance from satellite by the position range of desired accuracy.
Percentage uncertainty is given by

The percentage uncertainty that is required is 0.00001 %
Answer:
The upstroke of the piston draws water, through a valve, into the lower part of the cylinder. On the downstroke, water passes through valves set in the piston into the upper part of the cylinder. On the next upstroke, water is discharged from the upper part of the cylinder via a spout.
Explanation:
D. F=ma
F is for force, and that equals two things, M for mass and A for acceleration. When mass is accelerated, it gives you force. Force equals multiplying mass and its acceleration.