How does the Doppler effect related to the universal expanding?

1 answer:

7 0

The Doppler effect doesn't just apply to sound. It works with all types of waves, which includes light. Edwin Hubble used the Doppler effect to determine that the universe is expanding. Hubble found that the light from distant galaxies was shifted toward lower frequencies, to the red end of the spectrum. This is known as a red Doppler shift, or a red-shift. If the galaxies were moving toward Hubble, the light would have been blue-shifted.

You might be interested in

(05.06 LC)

goblinko [34]

Answer:

Explanation:

because percentage yield =actual/theoretical yield

5 0

3 years ago

Carbon forms a great variety of stable compounds. Which of the following is not a reason for this variety?

katen-ka-za [31]

Answer:

Explanation:

Carbon atoms are not strongly electronegative and tend to form covalent bonds.

4 0

3 years ago

Write the net ionic equation for any precipitation reaction that may be predicted when aqueous solutions of calcium iodide and c

Hitman42 [59]

<u>Answer:</u> The net ionic equation is written below.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

Spectator ions are defined as the ions which does not get involved in a chemical equation. They are found on both the sides of the chemical reaction when it is present in ionic form.

The chemical equation for the reaction of calcium iodide and chromium (III) sulfate is given as:

$3CaI_2(aq.)+Cr_2(SO_4)_3(aq.)\rightarrow 3CaSO_4(s)+2CrI_3(aq.)$

Ionic form of the above equation follows:

$3Ca^{2+}(aq.)+6I^{-}(aq.)+2Cr^{3+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)+2Cr^{3+}(aq.)+6I^-(aq.)$

As, chromium and iodide ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

$3Ca^{2+}(aq.)+3SO_4^{2-}(aq.)\rightarrow 3CaSO_4(s)$

Hence, the net ionic equation is written above.

8 0

3 years ago

How many atoms of carbon are on the reactant side?

JulijaS [17]

Answer:I dont know

Explanation:

5 0

3 years ago

How do you do Gas Laws

alukav5142 [94]

Gas laws what do you mean gas laws if I know what you mean then regular laws

5 0

3 years ago