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3 years ago

Jak wpłynie na czas oczekiwania na pierwsze ogrzanie wody (pytanie 1) zwiększenie mocy

Physics

1 answer:

Kryger [21]3 years ago

5 0

Answer:

so what are u saying

Explanation:

10x100=

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A 10-cm-thick aluminum plate (α = 97.1 × 10−6 m2/s) is being heated in liquid with temperature of 475°C. The aluminum plate has

Anuta_ua [19.1K]

Answer:

$T_0 = 338.916 Degree\ celcius$

Explanation:

Given data:

Thickness of aluminium sheet 10 cm

initial temperature = 25 degree celcius

Assumption

Thermal properties remain constant, transfer of heat by radiation is negligible.

from the information given in the question we have

T_S ≈T_∞ , it implies we have h → ∞

from table 4.2 Biot number → ∞ the value of

$\lambda_1 = 1.5708 and A_1= 1.2732$

The fourier number is

$t = \frac{\alpha t}{l^2} = \frac{97.1\times 10^{-6} \times 15}{0.05^2} = 0.5826$

Temperature at center after 15 second of heating

$\theta _{0 wall} = \frac{T_0 - T_{\infity}}{T_i -T_{\infity}} = A_i e^{\lambda_1^2 t}$

$T_0 = T_i -T_{\infity} \times A_i e^{\lambda_1^2 t}$

$T_0 = (25 - 475) 1.2732 e^{-1.5708^2 \times 0.5826} + 475 = 356 degree celcius$

$T_0 = 338.916 Degree\ celcius$

8 0

3 years ago

What temperature is required to transfer waste heat to the environment for a heat engine to be 100 percent efficient?

vlada-n [284]

HeatEngines!Agasolineengineisaformofaheatengine."Gasoline is mixed with air."A spark ignites the mixture, whichburns rapidly."Heat is released from the

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4 years ago

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If the strength of a magnetic field at B is three units the strength of the magnetic field at A is ____?

Tema [17]

If the strength of a magnetic field at B is three units the strength of the magnetic field at A, means that point B has three times more turns as compared to point A.

<h3>How strength of the magnetic field should be increased?</h3>

We can increase the strength of the magnetic field by increasing the number of turns which increases the strength of the current flow.

So we can conclude that point B has three times more turns as compared to point A.

Learn more about magnetic field here: brainly.com/question/14411049

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2 years ago

If water completely boils in 7 minutes, how long does it take to evaporate

Lapatulllka [165]

Answer: 20 minutes

Explanation: omm its 20 minutes

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2 years ago

The vertebral region is _________ to the scapular region.

Lisa [10]

Answer:

The answer is medial!

Explanation:

The vertebral region is medial to the scapula.

Hope This Helps!

-Justin:)

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2 years ago