Answer:
Vertical; horizontal.
Explanation:
The Virginia Department of Motor Vehicles started issuing sets of newly designed driver's licenses to drivers in 2009. Although, the cards that were issued to drivers prior to the introduction of the new cards remained valid until they were expired.
There are two categories (shapes) for the Virginia driver's license. The vertical shape license represents the driver who is under the age of 21, and the horizontal shaped license represents the driver who is over the age of 21.
Additionally, the Virginia's driver license (vertical in shape) issued to drivers who are under the age of 21 has a background image of a dogwood flower while the horizontal shaped license issued to drivers who are over the age of 21 has a background image of the state capitol.
Complete Question
Complete Question is attached below.
Answer:

Explanation:
From the question we are told that:
Diameter 
Power 
Head loss 




Generally the equation for Power is mathematically given by

Therefore



Since

Where


Therefore


Answer: The answer is four; four
Explanation: This is because of the mixture of material used and the number of directions it causes strain I directly proportional to the number of times it causes stress.