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julsineya [31]
3 years ago
8

Explain why astronomers use the term "blueshifted" for objects moving toward us and "redshifted" for objects moving away from us

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Physics
1 answer:
ValentinkaMS [17]3 years ago
8 0
<span>Two of them are "redshift" and "blueshift", which are used to describe an object'smotion toward or away from us in space. Redshift indicates that an object is moving away from us. "Blueshift" is a term that astronomers use to describe an object that is moving toward another object or toward us.</span>
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point A is at the bottom of a rough plane which is inclined at angle tita to the horizontal . A body of mass M is projected from
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<h2>The work done , when body moves along the plane </h2>

Explanation:

A body is projected from bottom of the inclined plane . When body is going up the plane .

The downward force = m g sinθ is developed due to its weight

As body is moving upwards , the force of friction will act downwards

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Thus force of friction f = μ mg cosθ

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or acceleration a = g ( sinθ + μ cosθ )

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When body moves down , the force of friction acts upwards

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As the body is projected with velocity u

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here a = g ( sinθ + μ cosθ )

Similarly , when it moves down , the initial velocity u = 0

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Precision
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