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barxatty [35]
4 years ago
7

A 6-inch diameter smooth plastic pipe 3100 ft in length delivers 2.2 cfs of water between two reservoirs. Water viscosity is 11.

11 x 10-6 ft2/s. What is the elevation difference (ft) in water surface between the reservoirs
Physics
1 answer:
defon4 years ago
8 0

Answer:

h = 6.39 m

Explanation:

radius = 6/2 =3in= 3/12 in/ft = 0.25 ft

apply continuity equation to evaluate the velocity

flow rate = area * velocity

        2.2 = π(0.25^2) * V  

⇒        V = 11.2 ft/s

*assuming there is no applied pressure difference along the pipe

applying Energy conservation law

initial potential energy = final kinetic energy

                              pgh = (1/2)*pv^2

where p  = density

            v = velocity  

plugging in the values:

p cancels out on both the sides

⇒ 9.81 * h = (11.2^2)/2

              h = 6.39 m

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An object moving at 38m/s takes 6s to come to a stop. What is the object's acceleration? _______m/s2
bearhunter [10]
Final velocity = 0m/s
Initial velocity = 38m/s

Acceleration = 0-38/6 = -38/6 = -6.33m/s2
6 0
4 years ago
An object moving in a straight line changes its velocity uniformly from 2m/s to 4 m/s over a distance of 12 m. What was its acce
andreyandreev [35.5K]

Answer:A

Explanation:

Initial velocity, u = 2m/s

Final velocity, v = 4m/s

Distance covered, s = 12m

Acceleration, a = ?

Using

v² = u² + 2as

2as = v² - u²

a = v²-u²/2s

a = 4²-2²/2 x 12

a = 16-4/24

a = 12/24

a = 0.5m/s²

3 0
4 years ago
Does the frequency distribution appear to have a normal distribution using a strict interpretation of the relevant​ criteria? Te
lukranit [14]

Answer:

And as we can see on the plot we have the distribution left skewed so then this distribution is not normal because we don't have a bell shaped histofram and is not symmetric.

Explanation:

Assuming the following dataset

Temperature (F)       Frequency

50-54                          2

55-59                          0

60-64                          4

65-69                          12

70-74                           7

75-79                           5

80-84                           1

For this case we can construct the histogram with the following R code.

f<-c(2,0,4,12,7,5,1)

> barplot(f)

And the result is on the figure attached.

And as we can see on the plot we have the distribution left skewed so then this distribution is not normal because we don't have a bell shaped histofram and is not symmetric.

4 0
3 years ago
SCIENCE
aivan3 [116]

Answer:

c is trueeeeeeeeeeeeeee

7 0
3 years ago
A ladybug has a mass of 0.01 g and a velocity of 0.6 m/s. What is his momentum?
Alex

0.000006‬kgm/s

Explanation:

Given parameters:

Mass = 0.01g

Velocity = 0.6m/s

Unknown:

Momentum = ?

Solution:

The momentum of a body is the product of its mass and velocity. It is subject to the impact a body in motion will have .

  Momentum = mass x velocity

The unit is in kgm/s

 We need to convert the mass to kilograms:

       1000g = 1kg

      0.01g = x kg ;  0.00001‬kg

Input the parameter:  

     Momentum = 0.00001 x 0.6 = 0.000006‬kgm/s

Learn more

Momentum brainly.com/question/2990238

#learnwithBrainly

4 0
3 years ago
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