The volume of water that goes into the hose is the same as the volume of water that comes out the nozzle. This means the velocity is inversely proportional to the area. The area is proportional to the square of the diameter.
Taken together, these facts mean that if the diameter is divided by a factor of 3, the velocity is multiplied by a factor of 3^2 = 9.
Nozzle velocity = 3^2 * entering velocity
.. = 9 * (4 m/s)
Nozzle velocity = 36 m/s . . . . . . . . . corresponding to selection A
Answer:
1. 
2. 
3. 
4. 
5. 
6. 
Step-by-step explanation:
First use 
It doesn't have to be , it could be 
. It will be the same answer.
1. 
2. 
3. 
4. 
5. 
6. 
Order of the people does not affect the total number of ways. Thus, we use combinations.
Total combinations: 20C5 = 15,504 ways.
Answer:
A 500.00 look there's a pattern
