1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Law Incorporation [45]
2 years ago
12

A fireman's water hose shoots 320 kg of water each second against the door of a building. The velocity of the water is 20 m/s an

d the water strikes the door horizontally and doesnt bounce back. What average force is exerted by the stream of water?
Mathematics
1 answer:
NeX [460]2 years ago
3 0

Answer:

6400\ \text{N}

Step-by-step explanation:

\dfrac{m}{t} = Mass flow rate of water = 320 kg/s

m = Mass of water on the door

t = Time

v = Velocity of water on the door = 20 m/s

Force is given by

F=\dfrac{m}{t}v\\\Rightarrow F=320\times 20\\\Rightarrow F=6400\ \text{N}

The average force is exerted by the stream of water is 6400\ \text{N}.

You might be interested in
For what value of x is quadrilateral CDEF a parallelogram?<br><br>x=?​
Contact [7]

Answer:

x = 5

Step-by-step explanation:

Since we know that the diagonals bisect each other and divide into equal parts so ➡

x - 2 = 2x -7

2x - x = 7 - 2

x = 5

8 0
2 years ago
The ratio x : y is 1 : 3
PilotLPTM [1.2K]

Answer:

A and B are correct

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can you guy's please help me out I was absent and now I don't have a clue!
Elena-2011 [213]
For these problems you have to use PEMDAS so for problem 15 you would do the parentheses first, (21-3) you get 18 and then exponents, 3^2, you get 9, no multiplication but there is division so take your answers, 18 and 9 and divide them, you get 2, so the answer to 15 is 2.
6 0
3 years ago
Can some one help me plz
tigry1 [53]
B but the last one in the b row
5 0
3 years ago
Read 2 more answers
10+ 40 % 5 x 2 <br> what’s the answer?
LuckyWell [14K]

Answer:

I'm going to assume that was supposed to be a division sign.. so 26.

Step-by-step explanation:

multiplication/division first

40/5=8

8x2=16

then addition

16+10=26

4 0
2 years ago
Other questions:
  • $6,000 dollars is invested in two different accounts earning 3% and 5% interest. at the end of one year, the two accounts earned
    11·2 answers
  • (−5)3x7(yz)4 / (3)2x2y8z2
    15·1 answer
  • What percent of 8 is 0.5?
    10·1 answer
  • *ANSWER FAST*
    13·1 answer
  • Two is eighteen more than two times a number, what is the equation
    10·2 answers
  • Perform each indicated operation
    11·1 answer
  • Lines l and m are parallel. When they are cut by the two transversals below, a triangle is formed.
    9·1 answer
  • BONUS, Factor 1 - 64x^3 completely,
    11·1 answer
  • Using a net to catch small fish, a student caught 4/5 pound of fish in ½ hour. At this rate, how many pounds would the student c
    6·1 answer
  • Image attached! Please help, and explain because I don’t understand!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!