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balandron [24]
3 years ago
13

3. Determine the bulk temperature, center line temperature, and surface temperature for a laminar flow in a 2 cm inner diameter

tube with defined velocity and temperature profiles: a. u=0.1[1-(r/0.01)^2] m/s b. T=400-3x10^6(1.875x10^-5-0.25r^2+624r^4) K c. Calculate the heat flux at the wall and the Nusselt number if the fluid is water (look up the property of water) d. Calculate the pressure drop in the tube over 10 cm.

Mathematics
1 answer:
Shkiper50 [21]3 years ago
5 0

Answer:

Attached is the full solution

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James is four years younger than Austin. If three times James age is increased by the square of Austin's age, the result is 28.
lora16 [44]

Answer:

James = 1 year

Austin = 5 years

Step-by-step explanation:

Let James age = x

Let Austin's age = y

James is four years younger than Austin.

x = y - 4

If three times James age is increased by the square of Austin's age, the result is 28.

3(x - 4) + y² = 28

Hence,

Note: x = y - 4

Hence,

3y - 12 + y² = 28

3y + y² - 12 - 28 = 0

y² + 3y - 40 = 0

y² + 8y - 5y - 40 = 0

y(y + 8) - 5(y + 8 ) = 0

(y + 8)(y - 5)

y = -8

y = 5 years

x = y - 4

x = 5 - 4

x = 1 years.

4 0
2 years ago
In the diagram below, P and Q are points on a circle with centre O.
Gnoma [55]

Answer:

<h2>∠PQT = 72°</h2>

Step-by-step explanation:

According to the diagram shown, ∠OPQ = ∠OQP = 18°. If PQT is a tangent to the circle, it can be inferred that line OQ is perpendicular to line QT. Ths shows that ∠OQT = 90°.

Also from the diagram, ∠OQP + ∠PQT = ∠OQT;

∠PQT  = ∠OQT -  ∠OQP

Given ∠OQP = 18° and ∠OQT = 90°

∠PQT = 90°-18°

∠PQT = 72°

8 0
3 years ago
Here you gooooooooooooo
Travka [436]

Answer:

30

Step-by-step explanation:

there are 3 parts to form that 90 degree angle

5 0
2 years ago
PLEASE HELP IF THE ANSWER DOES NOT APPLY TO THIS I WILL REPORT
tensa zangetsu [6.8K]
0.63 is the correct answer
4 0
2 years ago
A number decreased by two is at most four or at least nine
JulsSmile [24]
x-2  \leq  4

or

x-2   \geq 9
6 0
3 years ago
Read 2 more answers
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