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Romashka [77]
4 years ago
8

Systematic searching is a skill that takes ________ to master.

Engineering
2 answers:
bagirrra123 [75]4 years ago
7 0

Answer: B, repetitive practice! hope this helps. :)

Explanation:

inn [45]4 years ago
4 0

Answer: The answer is B

Explanation:

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A. A compound gear train is composed of four gears: E,F,G,H. Gear E has 15 teeth and is meshed with gear F. Gear F has 25 teeth
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Answer:

What subject is this in?? That would help a lot knowing

Explanation:

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3 years ago
Measures the power output of the machine
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Watts I believe is the answer
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3 years ago
Consider a very long rectangular fin attached to a flat surface such that the temperature at the end of the fin is essentially t
kodGreya [7K]

Answer:

\frac{T-20}{130-20}= e^{-14.28*0.05}

And if we solve for T we got:

T= 20 + 110e^{-14.28*0.05} = 73.86 C

The answer for this case would be T = 73.86 C at 5cm from the base of the fin.

Explanation:

Data given

For this case we have the following data given:

h = 20 \frac{W}{m^2 K} represent the heat transfer coefficient.

p represent the perimeter for this case and would be given by:

p = 2*0.05m +2*0.001m= 0.102m

k = 200 \frac{W}{m C} represent the thermal conductivity

w = 5cm =0.05 m represent the width

h = 1mm =0.001m represent the thickness

A= wh= 0.05m *0.001m = 0.00005 m^2

Solution to the problem

For this case we assume that we have steady conditions, the temperature of the fins varies just in one direction, the heat transfer coefficient not changes with the time and the thermal properties of the fin not change.

We can determine the temperature if the fin at x=5 cm=0.05 m from the base with the following formula:

\frac{T-T_{\infty}}{T_b -T_{\infty}} = e^{-mx}

Where m is a coefficient given by:

m = \sqrt{\frac{hp}{kA}}=\sqrt{\frac{20 W/m^2 C 0.102 m}{200 W/ mC 0.00005 m^2}}= 14.28 m^{-1}

The value of x for this case represent the distance x =5 cm =0.05m

T_b =130 C represent the base temperature

T_{\infty}= 20 represent the temperature of the sorroundings or the ambient.

If we replace we have this:

\frac{T-20}{130-20}= e^{-14.28*0.05}

And if we solve for T we got:

T= 20 + 110e^{-14.28*0.05} = 73.86 C

The answer for this case would be T = 73.86 C at 5cm from the base of the fin.

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3 years ago
A car C is traveling up a spiral ramp at a constant and traveling as fast as it can without losing traction. The grade of the ra
arsen [322]

Answer:

26.1 ft/s²

Explanation:

See attached pictures for detailed explanation.

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3 years ago
Two engineers are discussing the various merits of hydroelectricity. Engineer A says that tidal barrage systems can generate ele
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Answer:

they are both right

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