Answer:
and 
Explanation:
The tub rotates at constant speed and the kinematic formula to describe the change in angular displacement (
), measured in radians, is:

Where:
- Steady angular speed, measured in radians per second.
- Time, measured in seconds.
If
and
, then:


The change in angular displacement, measured in revolutions, is given by the following expression:


A
Answer:
Speed of water in the 0.5cm diameter will be faster because it has a smaller area
Since area x radius ² so if radius is reduced by 0.5 speed is increased by 4times in the 0.5 diameter pipe
Everything in the universe that is not a star reflects light from Stars. Otherwise you can't see it.
The SI / Metric unit of force is the ' Newton '.
1 newton is the force that accelerates 1 kg of mass at the rate of 1 m/s² .