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
Ghella [55]
3 years ago
14

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m hi

gh. It is placed vertically in the canal so that the water just covers the gate. Find the hydrostatic force on one side of the gate.
Note that your answer should be in Newtons, and use g = 9.8 m/s2.
Physics
1 answer:
mylen [45]3 years ago
4 0

Answer:

Explanation:

Area of trapezoid =[(2 + 38) / 2 ] x 2 = 40 sq m .

Pressure at the centre of the trapezium

= h d g = 1 x 10³ x 9.8 N / m²  ( height of centre is 1 m )

= 9800 N /m²

Total force required = pressure at the centre x total area

9800 x 40 = 392 x 10³ N.

You might be interested in
The average intensity of sunlight at the top of the earth's atmosphere in 1390 w/m2. what is the maximum energy that a 34-m x 46
slavikrds [6]
Panel surface area =34m×46m=1,564m^2
total power =1564m^2×1390w/m^2
=2173960watts
now you must calculate total energy.
Energy = power×Time
However time must be in seconds so we multiply 2hrs×60min×60s=7200seconds
7200s×2173960w =15,652,512,000 joules of energy
7 0
3 years ago
A golf ball is released from rest from the top of a very tall building. Choose a coordinate system whose origin is at the starti
Zigmanuir [339]

Answer:

Velocity of the ball after 3.04 (s) = 29.79 (m/s)

Explanation:

From the free fall movement we have the following formulas: Vf^{2} = Vo^{2} - 2gh and h=Vo*t - \frac{g*t^{2} }{2}, First we need to find the height to time iqual to 3.04 s using the formula: h=Vo*t - \frac{g*t^{2} }{2} and remember that golf ball was released from the rest (Vo= 0 (m/s)) so h= (0 (m/s))*(3.04 (s)) - \frac{9.8 (m/s^2)*(3.04 (s))^{2} }{2}, we get: h = -45.28 (m) with the height that we have got, now the velocity of the ball is calculate using Vf^{2} = Vo^{2} - 2gh solving for Vf, we get: Vf = \sqrt{Vo^{2}-2*g*h } replacing the values given Vf = \sqrt{(0 m/s)^{2}-2*(9.8 m/s^2)*(-45.28 m) }, so we get: Vf = 29.79 (m/s).

5 0
3 years ago
Read 2 more answers
What is one joule work
natta225 [31]
It's a Newton Meter Those two are multiplied to get a joule.
8 0
3 years ago
Which of the following represents a chemical change to matter? A. digestion of food B. melting an ice cube C. shredding paper D.
guajiro [1.7K]
The answer is A. digestion of food. The chemical change to matter means that the molecule structure has been destroyed. For B, C and D. the matter are still ice, paper and ice. So they are physical change.
8 0
3 years ago
1. Starting today. I will now change my behavior/s like ______________ because _________________
Ostrovityanka [42]

Answer:

be mature, it's the only way to be called independent, I will help my parents with doing chores, you will meet new friends

Explanation:

it's just my own understanding

6 0
3 years ago
Read 2 more answers
Other questions:
  • Why there are not green stars?
    13·1 answer
  • Imagine a box sitting on a shelf. What forces are acting on the box?
    5·1 answer
  • Why does the moon appear to wax grow larger and then wane or get smaller
    11·1 answer
  • Find your mass if a scale on earth reads 650 N when you stand on it.
    13·1 answer
  • Starting from a pillar, you run 200 m east (the + x-direction) at an average speed of 5.0 m/s and then run 280 m west at an aver
    10·1 answer
  • When an object is thrown upwards and reaches its maximum height its speed is: a. Greater than the initial
    11·1 answer
  • What happens to speed when wavelength decreases
    9·1 answer
  • help me.. a car moves for half of its time at 80km/h nd for rest of time at 40km/h.total distance coverd is 60km..wat is averge
    13·1 answer
  • What is common between the quantities of area, density and speed?​
    11·2 answers
  • What is the acceleration at 3 seconds?<br><br> Please explain your answer. Thank you :]
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!