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hodyreva [135]
4 years ago
11

What is an H-R diagram

Physics
2 answers:
MArishka [77]4 years ago
6 0
Is a graphical tool that astronomers use to classify stars according to their luminosity,spectral type,color ,temperature,and evolutionary stage.
Yuliya22 [10]4 years ago
4 0

An H-R diagram is a graph that compares the relationship between a star's absolute magnitude and surface temperature.

It is a tool that is still used today to study the life cycle of stars, how stars are classified by temperature and magnitude, and how stars evolve over time.

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What is the downward pull on an object due to gravity?
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A phone cord is 4.67 m long. The cord has a mass of 0.192 kg. A transverse wave pulse is produced by plucking one end of the tau
Olegator [25]

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91.017N

Explanation:

Parameters

L=4.67m, m=0.192kg, t = 0.794s, The pulse makes four trips down and back along the cord, we have 4 +4 =8 trips( to and fro)

so N= no of trips = 8, From  Wave speed(V) = N *L/t , we have :

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We compute the cords mass per length,  Let it be P

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4 years ago
A moose runs through the woods and covers 825 m North in 118 s. What is the average velocity of the moose?
weqwewe [10]
  • Total displacement=825m
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Average Velocity=Total Displacement/Total Time

\\ \sf\longmapsto Average\: Velocity=\dfrac{825}{118}

\\ \sf\longmapsto Average\:Velocity\approx 8m/s

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