A 2750-pound car is parked on a hill with a slant of 40° from the horizontal. How much force will keep it from rolling down the
1 answer:
Answer:
1768.25 N
Step-by-step explanation:
We are given that
Weigh of car=w=2750 pounds
We have to find the force required to keep it from rolling down the hill.
Force required to keep it from rolling down the hill=
Substitute the values
Force required to keep it from rolling down the hill=
Force required to keep it from rolling down the hill=
Force required to keep it from rolling down the hill=1768.25 N
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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.