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Karo-lina-s [1.5K]
3 years ago
6

The ____ neurons allow the body to move and are greatly influenced by electri

Engineering
2 answers:
LuckyWell [14K]3 years ago
7 0
The Neurons allow the body to move
A
jeka943 years ago
4 0

Answer:

the answer would be B motor

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he circular stream of water from a faucet is observed to taper from a diameter of 21 mm to 12 mm in a distance of 52 cm. Determi
Gemiola [76]

Answer: 1.52 × 10^{-3} \frac{m^{3} }{s}

Explanation:

Please kindly find the attached document for the answer.

5 0
3 years ago
WIL MARK U AS BRAINLIEST HELP PLZ
ss7ja [257]

Answer:

The 1st one:Your natural ability

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3 years ago
Unlike expendable molds, permanent molds do not collapse, so the mold must be opened before appreciable cooling contraction occu
Pani-rosa [81]

Answer: True

Explanation:

Permanent molds do not collapse, unlike expendable molds so the mold must be opened before appreciable cooling contraction occurs in order to prevent cracks from developing in the casting.

The metal casting becomes solid inside the mold after it has been poured. But during the process of manufacture, before the would cools any further, they usually remove the metal cast in order to stop excess contractions of the solid metal casting in the mold. This is done to prevent prevent cracks from developing in the casting since permanent mold do not collapse.

8 0
3 years ago
Explain the Corona discharge?​
rosijanka [135]

Answer:

• Corona discharge means <u> </u><u>neutralization</u><u> </u><u>of</u><u> </u><u>charge</u><u> </u><u>action</u><u> </u><u>at</u><u> </u><u>a</u><u> </u><u>sharp</u><u> </u><u>point</u>

example; a pear shaped conductor, lightening conductor, van de graaf generator.

Explanation:

• In corona discharge, When a sharp conductor is placed somewhere in open space. The charges of opposite chrage attract the opposite ions in the air around that conductor.

• This increases the charge density and electric field intensity at the sharp point, this neutralises the charge at sharp point hence a discharge known as corona discharge occurs.

.

8 0
3 years ago
A dryer is shaped like a long semi-cylindrical duct of diameter 1.5 m. The base of the dryer is occupied with water-soaked mater
Anestetic [448]

Answer:

0.0371 kg/s.m

Explanation:

From the given information, let's have an imaginative view of the semi-cylinder; (The image is shown below)

Assuming the base surface of both ends of the cylinder is denoted by:

A_1  \ and   \ A_2

Thus, using the summation rule, the view factor F_{11 and F_{12 is as follows:

F_{11}+F_{12}=1

Let assume the surface (1) is flat, the F_{11} = 0

Now:

0+F_{12}=1

F_{12}=1

However, using the reciprocity rule to determine the view factor from the dome-shaped cylinder A_2 to the flat base surface A_1; we have:

A_2F_{21} = A_{1}F_{12} \\ \\ F_{21} = \dfrac{A_1}{A_2}F_{12}

Suppose, we replace DL for A_1 and

A_2 =  \dfrac{\pi D}{2}

Then:

F_{21} = \dfrac{DL}{(\dfrac{\pi D}{2}) L} \times 1 \\ \\  =\dfrac{2}{\pi} \\ \\  =0.64

Now, we need to employ the use of energy balance formula to the dryer.

i.e.

Q_{21} = Q_{evaporation}

But, before that;  let's find the radian heat exchange occurring among the dome and the flat base surface:

Q_{21}= F_{21} A_2 \sigma (T_2^4-T_1^4) \\ \\ Q_{21} = F_{21} \times \dfrac{\pi D}{2} \sigma (T_2^4 -T_1^4)

where;

\sigma = Stefan \ Boltzmann's \ constant

T_1 = base \ temperature

T_2 = temperature  \ of  \ the  \ dome

∴

Q_{21} = 0.64 \times (\dfrac{\pi}{2}\times 1.5) \times 5.67 \times 10^4 \times (1000^4 -370^4)\\ \\ Q_{21} = 83899.15 \ W/m

Recall the energy balance formula;

Q_{21} = Q_{evaporation}

where;

Q_{evaporation} = mh_{fg}

here;

h_{fg} = enthalpy of vaporization

m = the water mass flow rate

∴

83899.15 = m \times 2257 \times 10^3  \\ \\  m = \dfrac{83899.15}{ 2257 \times 10^3 }\\ \\ \mathbf{m = 0.0371 \ kg/s.m}

6 0
2 years ago
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