Answer:

Explanation:
Given that the radius of the pipe, r =0.0112 m
So, the area of the cross-section, 
Speed of water in the pipe, v=3.25 m/s
Volume flow rate =
Hence, the volume flow rate is 
Answer:
B. In a vacuum, it is a constant value that does not depend on the observer.
Answer:
In 5 years or so, the sun will be awash in sunspots and more prone to violent bursts of magnetic activity.
Explanation
once the magnetic field weakens the area and cold plasma enters the area of the sunspot