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
Gwar [14]
2 years ago
8

Water leaves a penstock (the flow path through a hydroelectric dam) at a velocity of 100 ft/s. How deep is the water behind the

dam (in ft). Neglect friction. [h = 155 ft]
Engineering
1 answer:
Marysya12 [62]2 years ago
8 0

Answer:

155fts

Explanation:

We apply the bernoulli's equation to get the depth of water.

We have the following information

P1 = pressure at top water surface = 0

V1 = velocity at too water surface = 0

X1 = height of water surface = h

Hf = friction loss = 0

P2 = pressure at exit = 0

V2 = velocity at exit if penstock = 100ft/s

X2 = height of penstock = 0

g = acceleration due to gravity = 32.2ft/s²

Applying these values to the equation

0 + 0 + h = 0 + v2²/2g +0 + 0

= h = 100²/2x32.2

= 10000/64.4

= 155.28ft

= 155

You might be interested in
Anaircraft component is fabricated from an aluminum alloy that has a plane-strain fracture toughness of 40 MPa 1/2.It has been d
navik [9.2K]

Answer:

Yes, fracture will occur since toughness (42.4 MPa) is greater than the toughness of the material, 40MPa

Explanation:

Given

Toughness, k = 40Mpa

Stress, σ = 300Mpa

Length, l = 4mm = 4 * 10^-3m

Under which fracture occurred (i.e., σ= 300 MPa and 2a= 4.0 mm), first we solve for parameter Y (The dimensionless parameter)

Y = k/(σπ√a)

Where a = ½ of the length in metres

Y = 40/(300 * π * √(4/2 * 10^-3))

Y = 1.68 ---- Approximated

To check if fracture will occur of not; we apply the same formula.

Y = k/(σπ√a)

Then we solve for k, where

σ = 260Mpa and a = ½ * 6 * 10^-3

So,.we have

1.68 = k/(260 * π * √(6*10^-3)/2)

k = 1.68 * (260 * π * (6*10^-3)/2)

k = 42.4 MPa --- Approximately

Therefore, fracture will occur since toughness (42.4 MPa) is greater than the toughness of the material, 40 MPa

7 0
3 years ago
Read 2 more answers
When you apply for your driver license, you consent to take a ____ test when asked to do so by a law enforcement officer. memory
n200080 [17]

Answer:

Driving test

Explanation:

Usually according to laws in countries worldwide, to be licenced to drive, one is required to go through a driving school to learn the ethics and rules of driving.

4 0
1 year ago
What is the primary reason traffic laws exist ?
kramer

so people dont die whaddya think?

4 0
2 years ago
Read 2 more answers
When calculating gear ratios, which formula is different from the others?
BartSMP [9]

Answer:

The number of threads in a worm is the number of teeth in a worm. The speed transmission ratio of a worm and worm gear set is obtained by dividing the number of teeth of the worm gear by the number of threads of the worm.

6 0
3 years ago
Jaden is doing an experiment to find out if plants grow taller when given plain water or sugar water. To make sure his experimen
Anettt [7]
I believe he should use two separate plants. One just for tracking the growth with plain water and the other for sugar.
3 0
3 years ago
Read 2 more answers
Other questions:
  • To make 1000 containers of ice cream you need: 600 gallons of milk, 275 gallons of cream, and 120 gallons of flavor. Each ingred
    12·1 answer
  • Give five general principles involved in the process of sewage filtration?​
    5·1 answer
  • python Given num_rows and num_cols, print a list of all seats in a theater. Rows are numbered, columns lettered, as in 1A or 3E.
    5·1 answer
  • A heat engine does 210 J of work per cycle while exhausting 440 J of waste heat. Part A What is the engine's thermal efficiency?
    6·1 answer
  • What is the measurement of this dial caliper? <br> A. 5.491<br> B. 4.044<br> C. 5.691
    7·1 answer
  • Fill in the blank to correctly complete the statement below.
    6·1 answer
  • What are the functions of the peripheral nervous system
    6·2 answers
  • Let's model this housing price data! Before we can do this, however, we need to split the data into training and test sets. Reme
    10·1 answer
  • What car is this? I thinks its a nissan 240sx but i dont know
    11·1 answer
  • Add the following vector given in rectangular form and illustrated the process graphically A = 16+j12, B= 6+j10.4
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!