What is Hubbles Law?

Physics

2 answers:

Whitepunk [10]2 years ago

8 0

Answer:

Explanation:

Hubble's law is considered the first observational basis for the expansion of the universe and today serves as one of the pieces of evidence most often cited in support of the Big Bang model.The motion of astronomical objects due solely to this expansion is known as the Hubble flow.

STALIN [3.7K]2 years ago

4 0

Explanation: Hubble was a person but they named a satellite that they sent out into outer space after him. He discovered that the galaxies that are the furthest away are moving the fastest away from us and the galaxies that are closer to us are moving at a slower rate.

So that is Hubble's law. Hubble's law is a mathematical thing that you can do if you take higher level astronomy. There is a mathematical relationship that you can figure out which is the the further away something is the faster it's moving away.

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There is a small scratch on a disco record located 14.5 cm from the center. When played, the scratch makes the record skip 30 ti

LuckyWell [14K]

Answer:

The linear speed of scratch is 45.55 cm/dec

Explanation:

The scratch located from the center at radial distance = 14.5 cm.

Each minute the skip of scratch when disco record played = 30 times

Since, the scratch on the disc start revolving when disc is played and in one minute the scratch revolve 30 times. Therefore, the revolution = 30 RPM

Below is the calculation of linear speed of the scratch.

$Angular \ velocity, \ w \ = \frac{2 \pi \times RPM}{60} \\$