3 years ago

What do we mean by the observable universe?

1 answer:

mote1985 [20]3 years ago

4 0

The observable universe<span> is a spherical region of the </span>Universe, <span>comprising all matter that can be observed from Earth at the present time, because light and other signals from these objects have had time to reach Earth since the beginning of the cosmological expansion.

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As heat is added to water, is it possible for the temperature measured by a thermometer in the water to remain constant?

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Explanation:

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3 years ago

What is the mathematical expression for the electric ptential difference between points A and B when a charged particle is movin

ratelena [41]

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$chang in V=\int\limits^B_A {E} \, ds$

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Since, as we know, the potential difference 'ΔV' is the difference of between the Potential energy per unit charge U/qo at one point 'B' to Potential energy per unit charge at other point 'A'. It so happens when a test charge 'qo' moves from point A to B, the potential difference becomes the change of potential energy of the system, i.e.

$Potential Difference =\frac{change in U}{qo}=\int\limits^B_A {E} \, ds$

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4 years ago

How does dark energy affect the universe?

Rzqust [24]

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