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beks73 [17]
3 years ago
11

Where does cosmic microwave background radiation come from? A. It is radiation produced by pulsars and black holes that warps ou

r view of other galaxies. B. It is radiation formed from the invention of microwave ovens that gets transmitted through space just like our radio waves. C. It is radiation leftover from the Big Bang. D. It is the sign we are searching for to indicate intelligent life exists elsewhere in the universe. plzzzz help me asap
Physics
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

C. It is radiation leftover from the Big Bang

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A parallel plate capacitor with air between the plates has a potential difference of 71.0 V. Determine the potential difference
Gwar [14]

Answer:

15.8 V

Explanation:

The relationship between capacitance and potential difference across a capacitor is:

q=CV

where

q is the charge stored on the capacitor

C is the capacitance

V is the potential difference

Here we call C and V the initial capacitance and potential difference across the capacitor, so that the initial charge stored is q.

Later, a dielectric material is inserted between the two plates, so the capacitance changes according to

C'=kC

where k is the dielectric constant of the material. As a result, the potential difference will change (V'). Since the charge stored by the capacitor remains constant,

q=C'V'

So we can combine the two equations:

CV=CV'\\CV=(kC)V'\\V'=\frac{V}{k}

and since we have

V = 71.0 V

k = 4.50

We find the new potential difference:

V'=\frac{71.0}{4.50}=15.8 V

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Answer:

Tect book

Explanation:

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irga5000 [103]

Answer:

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When two waves collide and create a taller wave, what interference occurs?
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Why would you expect sodium (Na) to react strongly with chlorine (Cl)?
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