3 years ago

Physical science is the study of

1 answer:

7 0

Physical science is the study, measurement and observation of nonliving objects whereas biological.

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natulia [17]

Answer:

The value is $A = 2.80 *10^{-4} \ m^2$

Explanation:

From the question we are told that

The operating temperature is $T = 2450 \ K$

The emissivity is $e = 0.350$

The power rating is $P = 200 \ W$

Generally the area is mathematically represented as

$A = \frac{P}{ e * \sigma * T^2}$

Where $\sigma$ is the Stefan Boltzmann constant with value

$\sigma = 5.67 *10^{-8} \ W/m^2\cdot K^4$

$A = \frac{200}{0.350 * 5.67*10^{-8} * 2450^{4}}$

$A = 2.80 *10^{-4} \ m^2$

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3 years ago

Ratling [72]

Becsud it's not moving

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dangina [55]

as the surface area increases the rate of reaction also increases.

Explanation:

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3 years ago

Goshia [24]

It would have to be the engine

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2 years ago

Andrej [43]

Answer:b

Explanation:

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3 years ago