Answer:
It will leave the sprinkler at speed of
Step-by-step explanation:
We have given internal diameter of the garden hose
So radius
So area
Water in the hose has a speed of 4 ft/sec
So
Number of holes n = 36
Diameter of each hole
So radius
So area
From continuity equation
Answer:
There are 685464 ways of selecting the 5-card hand
Step-by-step explanation:
Since the hand has 5 cards and there should be at least 1 card for each suit, then there should be 3 suits that appear once in the hand, and one suit that apperas twice.
In order to create a possible hand, first we select the suit that will appear twice. There are 4 possibilities for this. For that suit, we select the 2 cards that appear with the respective suit. Since there are 13 cards for each suit, then we have possibilities. Then we pick one card of all remaining 3 suits. We have 13 ways to pick a card in each case.
This gives us a total of 4*78*13³ = 685464 possibilities to select the hand.