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Elena-2011 [213]
3 years ago
13

What conclusions can you reach from your gym teacher’s science-fair display?

Engineering
1 answer:
Ber [7]3 years ago
8 0

Answer:

On wht!?!?!?!

Explanation:

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Assume a steel pipe of inner radius r1= 20 mm and outer radius r2= 25 mm, which is exposed to natural convection at h = 50 W/m2.
Mekhanik [1.2K]

Answer:

98,614.82 W/m²

Explanation:

Q = 2\pi hL(\frac{T_2-T_1}{Ln\frac{r_2}{r_1}})

Where;

Q = the amount of heat loss from the pipe

h =  the heat transfer coefficient of the pipe = 50 W/m².K

T₁ = the ambient temperature of the pipe = 30⁰C

T₂  = the outside temperature of the pipe = 100⁰C

L= the length of pipe

r₁ = inner radius of the pipe = 20mm

r₂ = outer radius of the pipe = 25mm

To determine the amount of heat loss from the pipe per unit length

From the equation above

\frac{Q}{L} = 2\pi h(\frac{T_2-T_1}{Ln\frac{r_2}{r_1}})

\frac{Q}{L} = 2\pi* 50(\frac{100-30}{Ln\frac{25}{20}})

\frac{Q}{L} = 314.159(\frac{70}{0.223})

\frac{Q}{L} = 314.159(313.901) = 98,614.82 W/m²

3 0
4 years ago
A.
nalin [4]

THE ANSWER IS B Beaycs i like BExplanation:

3 0
3 years ago
Derive the probability that a receptor is occupied by a ligand using a model that treats the L ligands in solution as distinguis
love history [14]

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Do NOT mix ____________________ with used oil. A) Transmission oilB) AntifreezeC) Hydraulic fluidsD) Synthetic oil
Scorpion4ik [409]
Do not mix Antifreeze with used oil
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3 years ago
All arrived at an uncontrolled intersection at the same time. which has the right-of-way?:
Molodets [167]

If two vehicles arrive at an uncontrolled intersection almost simultaneously, the driver of the car that arrived at the intersection last must give the right of way. The driver on the left has the right of way if you both arrive at the intersection at the same moment.

Which driver should yield at an uncontrolled T-intersection?

The driver of the car turning must give way to all oncoming cross traffic when two cars are approaching an uncontrolled "T" crossroads. You need to stop and give way to vehicles and pedestrians while entering a public road from a driveway or private road.

What is right of way?

When two vehicles or pedestrians are approaching from opposite directions, moving at a speed, and close enough to create a collision, one has the right to move forward legally before the other, unless the other gives way.

Learn more about uncontrolled intersection: brainly.com/question/14312150

#SPJ4

4 0
2 years ago
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