3 years ago

When does light refract?

Physics

1 answer:

Helga [31]3 years ago

5 0

Light refracts when it crosses the boundary between two types of material in which the speed of light is different.

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What is the difference between an open and closed circuit?

exis [7]

A closed circle means the number is included and an open circle means its not.

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Quá trình nào entropi của hệ không đổi

Romashka-Z-Leto [24]

Answer:

I don speak communism. Could you answer in English?

Explanation:

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3 years ago

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A 10N falling encounters 10N of air resistance (upward force). The net force on the object is:

NemiM [27]

0 N. It's being pushed up the same amount it's being pushed down, so it cancels out.

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3 years ago

The concrete slab of a basement is 11 m long, 8 m wide, and 0.20 m thick. During the winter, temperatures are nominally 17°C and

mina [271]

Answer:

$\frac{dQ}{dt}= 4312 W$

Explanation:

As we know that base of the slab is given as

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$A = 88 m^2$

now we know that rate of heat transfer is given as

$\frac{dQ}{dt} = \frac{kA}{x} (T_2 - T_1)$

here we know that

$k = 1.4 W/m k$

Also we have

$x =0.20$

$\frac{dQ}{dt} = \frac{1.4(88)}{0.20}(17 - 10)$

$\frac{dQ}{dt}= 4312 W$

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3 years ago

who brought astronomy out of the dark ages by declaring: "finally we shall place the sun himself at the center of the universe.

solong [7]

Nicolaus Copernicus was the one who brought astronomy out of the dark ages.

In one of his books "On the Revolutions of the Heavenly Bodies", he published the renowned line which declares his theory.

Nicolaus Copernicus, A polish astronomer put forward the theory that the is th Sun one that rests in the middle or center of the Universe and the planet Earth revolves around it on its axis every day.which was considered to be called the Heliocentric system.

To know more about the Heliocentric system refer to the link brainly.com/question/3491738?referrer=searchResults.

To know about Sir Nicolaus Copernicus' work refer to the link brainly.com/question/6699117?referrer=searchResults.

#SPJ4

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2 years ago