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Archy [21]
3 years ago
9

Based on the information below, both Polaris and Sirius are much hotter than the Sun. However, on Earth, we feel the heat from t

he Sun and not from Polaris or Sirius because?
A.Earth’s seasons are caused by rotation around the Sun.
B.a year on the Sun is less than a year on Polaris or Sirius.
C.Polaris and Sirius are farther north than the Sun.
D.Polaris and Sirius are farther away than the Sun.
Chemistry
2 answers:
Mars2501 [29]3 years ago
8 0

Answer:

<h2> <u>D</u><u>.</u><u> </u><u>Polaris</u><u> </u><u>and</u><u> </u><u>Sirius</u><u> </u><u>are</u><u> </u><u>farther</u><u> </u><u>away</u><u> </u><u>than</u><u> </u><u>the</u><u> </u><u>Sun</u><u>.</u></h2>

Explanation:

  • <em>T</em><em>h</em><em>a</em><em>t</em><em>'</em><em>s</em><em> </em><em>w</em><em>h</em><em>y</em><em> </em><em>w</em><em>e</em><em> </em><em>c</em><em>a</em><em>n</em><em> </em><em>f</em><em>e</em><em>e</em><em>l</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>h</em><em>e</em><em>a</em><em>t</em><em> </em><em>f</em><em>r</em><em>o</em><em>m</em><em> </em><em>t</em><em>h</em><em> </em><em>S</em><em>u</em><em>n</em><em> </em><em>a</em><em>n</em><em>d</em><em> </em><em>n</em><em>o</em><em>t</em><em> </em><em>f</em><em>r</em><em>o</em><em>m</em><em> </em><em>P</em><em>o</em><em>l</em><em>a</em><em>r</em><em>i</em><em>s</em><em> </em><em>o</em><em>r</em><em> </em><em>S</em><em>i</em><em>r</em><em>i</em><em>u</em><em>s</em><em>.</em>
azamat3 years ago
7 0

Answer:

  D.  Polaris and Sirius are farther away than the Sun.

Explanation:

The radiation intercepted by Earth is inversely proportional to the square of the distance from the source. Polaris and Sirius are substantially farther away than the sun.

Polaris, for example, is about 27 million times farther away, so even though it is 4000 times brighter, we receive on the order of 5×10^-12 as much radiation from that star as from the sun.

We feel less heat from stars other than the Sun because they are farther away.

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PLEASE ANSWER CORRECTLY AND ONLY IF U KNOW! IS IT A B C OR D?!
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6 0
3 years ago
what is the concentration of a dextrose solution prepared by diluting 14 ml of a 1.0 m dextrose solution to 25 ml using a 25 ml
allsm [11]

The concentration of a dextrose solution prepared by diluting 14 ml of a 1.0 M dextrose solution to 25 ml using a 25 ml volumetric flask is 0.56M.

Concentration is defined as the number of moles of a solute present in the specific volume of a solution.

According to the dilution law, the degree of ionization increases on a dilution and it is inversely proportional to the square root of concentration. The degree of dissociation of an acid is directly proportional to the square root of a volume.

M₁V₁=M₂V₂

Where, M₁=1.0M, V₁=14ml, M₂=?, V₂=25ml

Rearrange the formula for M₂

M₂=(M₁V₁/V₂)

Plug all the values in the formula

M₂=(1.0M×14 ml/25 ml)

M₂=14 M/25

M₂=0.56 M

Therefore, the concentration of a dextrose solution after the dilution is 0.56M.

To know more about dilution

brainly.com/question/18566203

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