3 years ago

Техническое задание

Physics

1 answer:

My name is Ann [436]3 years ago

5 0

2flaunguage is this

Explanation:

i need points

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Silver is a white metal and is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does

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A is the answer. That is not a chemical property.

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A pair of stylish sneakers could be considered a<br> because it is not a necessity

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want

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because it is not actually needed for the existence of life at that particular time

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Andy is entering early adolescence. although he used to be a big help to his mother by doing household chores, he now refuses, s

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a. gender intensification

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This theory states that in the adolescence both girls and boys are pressured to follow gender roles established culturally.

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If the length of a simple pendulum is increased by 4% and the mass is decreased by 4%, the period is:_________ A. not changed. B

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D i think, sorry if i got it wrong

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The total surface area of the human body is 1.20 m2 and the surface temperature is 30∘C=303∘K. If the surroundings are at a temp

zalisa [80]

To solve this problem we must consider the expressions of Stefan Boltzmann's law for which the rate of change of the radiation of energy H from a surface must be

$H = Ae\sigma T^4$

Where

A = Surface area

e = Emissivity that characterizes the emitting properties of the surface

$\sigma$ = Universal constant called the Stefan-Boltzmann constant $(5.67*10^{-8}m^{-2}K^{-4})$

T = Absolute temperature

The total heat loss would be then

$Q = H_2 -H_1$

$Q =Ae\sigma T_2^4-Ae\sigma T_1^4$

$Q = Ae\sigma (T_2^4-T_1^4)$

$Q = (1.2)(1)(5.67*10^{-8})(303^4-280^4)$

$Q = 155.29J$

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3 years ago