2 years ago

Helpppppppppp meeeeeeeeeee plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Physics

1 answer:

borishaifa [10]2 years ago

3 0

It’s either A or C but most likely A

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Answer:

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3 years ago

Find the total volume of the material used to making the cylinder

gladu [14]

Answer:

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Explanation:

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2 years ago

25 PTS

yarga [219]

The answer would be C

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3 years ago

One example of a physical change is

ycow [4]

Answer:

Mixing a milkshake

Explanation:

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3 years ago

The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the

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

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

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

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

8 0

3 years ago