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Alja [10]
2 years ago
8

The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k=0.029 W/m.K. The measured temperature diff

erence across a 25-mm-thick sheet of the material is LaTeX: T_1-T_2\:=\:12°CT 1 − T 2 = 12 ° C . a) What is the heat flux (in W/m2) through a 3m by 3m sheet of the insulation?
Physics
1 answer:
klasskru [66]2 years ago
3 0

Answer:

flux=13.92W/m^2

Explanation:

The heat transfer by conduction consists in the transport of energy through particles that are together, that is to say by means of solids, Newton developed an equation that allows to know the heat transported in a flat plate knowing the cross sectional area A, Thickness L, conductivity  K  and a temperature difference between the internal and external surface.

Q=KA(t2-t1)/L

To know the heat flux we simply divide both sides of the equation by the area.

Flux=K(t2-t1)/L

where

K=0.029w/mk

L=25mm=0.025m

t2-t1=12 ° C

solving

Flux=(0.029)(12)/(0.025)

flux=13.92W/m^2

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Answer:

0.74 m/s

Explanation:

given,

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initial velocity is equal to zero

 x =\dfrac{1}{2}at^2........(2)

equating equation (1) and (2)

v_{belt}t_{belt}=\dfrac{1}{2}at^2

v_{belt}t_{belt}=\dfrac{1}{2}a(\dfrac{1}{4}\times t_{belt})^2

v_{belt}=\dfrac{1}{32}a t_{belt}

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v_{belt}= 0.74\ m/s

Speed of the belt is equal to 0.74 m/s

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Explain why gases are more compressible than solid
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If we put pressure on a solid or a liquid, there is essentially no change in volume. ... The kinetic-molecular theory explains why gases are more compressible than either liquids or solids. Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles.

Explanation:

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2 years ago
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Explanation:

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A box of mass m = 1.80 kg is dropped from rest onto a massless, vertical spring with spring constant k = 2.00 ✕ 102 N/m that is
Rudik [331]

Answer:

spring compressed is 0.724 m

Explanation:

given data

mass = 1.80 kg

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solution

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1.8 × 9.8 × (2.25+x)  = 0.5 × 2× 10² × x²

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3 years ago
Give me fun facts, the most fun fact will get brainly Est (i like animals)
swat32

Answer:

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