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
sveta [45]
3 years ago
5

04-9 (ML 6.12) A pristine stream flowing at 100 cubic feet per second (cfs) in the Rocky Mountains contains 5 mg/L of suspended

solids (SS). During the spring, ice melt conveys an additional 250 mg/L of TSS at a rate of 20 cfs into the stream. Determine the concentration of TSS in the stream during the spring. (Hint: Treat the ice melt as a secondary stream added to the first.) Answer: 46 mg/L
Physics
1 answer:
timurjin [86]3 years ago
4 0

Answer:

C_{mix} = 45.833 mg/l

Explanation:

Give data:

flow rate of stream is Q_1 100 cfs

concentration of suspended solids SS_1 5 mg/L

During spring time,

concentration of TSS = SS_2 = 250 mg/l

flow rate of stream Q_2= 20 cfs

we know that, concentration of mix is given as

C_{mix} = \frac{Q_1 SS_1 +  Q_2 SS_2}{Q_1 +Q_2}

C_{mix} = \frac{100\times 5 + 20\times 250}{100+20}

C_{mix} = 45.833 mg/l

You might be interested in
The magnitude of the net force versus time graph has a rectangular shape. Often in physics geometric properties of graphs have p
Blizzard [7]

Answer:

True

Explanation:

In this particular case, the area of the graph represents the impulse.

In fact, impulse is defined as the change in momentum of an object:

I=\Delta p

Moreover, impulse is also defined as the product between the magnitude of the force acting on an object and the duration of the collision:

I=F\Delta t

If we plot a graph of the force versus the time, if the force is constant then this graph will have a rectangular shape, and the area under the graph will simply be the product

F\cdot \Delta t

which corresponds to the definition of impulse.

8 0
3 years ago
Help this Is easy for you
DochEvi [55]

Answer:

if its so easy why dont u do it  .

Explanation:

6 0
3 years ago
What is the main function of chloroplasts?
dangina [55]

Answer:

C

To convert sunlight into usable sugars

(

Explanation:

6 0
3 years ago
A particle's position is given by z(t) = −(6.50 m/s2)t2k for t ≥ 0. (Express your answer in vector form.) a. Find the particle's
blondinia [14]

Answer:

a) z'(t) =v(t) = -13t

Now we can replace the velocity for t=1.75 s

v(1.75s) = -13*1.75 =-22.75 \frac{m}{s}

For t = 3.0 s we have:

v(3.0s) = -13*3.0 =-39 \frac{m}{s}

b) v_{avg}= \frac{z_f - z_i}{t_f -t_i}

And we can find the positions for the two times required like this:

z_f = z(3.0s) = -(6.5 \frac{m}{s^2}) (3.0s)^2=-58.5m

z_i = z(1.75s) = -(6.5 \frac{m}{s^2}) (1.75s)^2=-19.906m

And now we can replace and we got:

V_{avg}= \frac{-58.5 -(-19.906) m}{3-1.75 s}= -30.875 \frac{m}{s}

Explanation:

The particle position is given by:

z(t) = -(6.5 \frac{m}{s^2}) t^2, t\geq 0

Part a

In order to find the velocity we need to take the first derivate for the position function like this:

z'(t) =v(t) = -13t

Now we can replace the velocity for t=1.75 s

v(1.75s) = -13*1.75 =-22.75 \frac{m}{s}

For t = 3.0 s we have:

v(3.0s) = -13*3.0 =-39 \frac{m}{s}

Part b

For this case we can find the average velocity with the following formula:

v_{avg}= \frac{z_f - z_i}{t_f -t_i}

And we can find the positions for the two times required like this:

z_f = z(3.0s) = -(6.5 \frac{m}{s^2}) (3.0s)^2=-58.5m

z_i = z(1.75s) = -(6.5 \frac{m}{s^2}) (1.75s)^2=-19.906m

And now we can replace and we got:

V_{avg}= \frac{-58.5 -(-19.906) m}{3-1.75 s}= -30.875 \frac{m}{s}

8 0
3 years ago
Ed rolls a ball forward across the floor. It hits a wall 12 meters away and rolls back along the same path. It stops 5 meters fr
slamgirl [31]
I believe it's 7 meters positive (foward)
8 0
2 years ago
Read 2 more answers
Other questions:
  • A rock with a mass of 25 kg has a weight of 40.8 n on the moon. what is the value of the acceleration of gravity (g) on the moon
    14·1 answer
  • A mirror produces an image that is located 34.0 cm behind the mirror when the object is located 7.50 cm in front of the mirror.
    7·1 answer
  • Has anyone read the book Third level
    9·2 answers
  • Law of Conservation of Energy.
    12·1 answer
  • Light can travel from the sun to ________ in less than ten minutes.
    7·1 answer
  • Suppose Galileo dropped a lead ball (100 kilograms) and a glass ball (1 kilogram) from the Leaning Tower of Pisa. Which one hit
    8·1 answer
  • Difference between wavefront and wavelets​
    6·1 answer
  • Of the following statement: Choose the Variable<br><br> X = 4 m
    15·1 answer
  • A bike travels at 3.0 m/s, and then accelerates to a speed of
    5·1 answer
  • What is the difference between sounds that have the same pitch and loudness?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!