The question isn't clear enough, I think it ask us to calculate the linear speed of a point at the edge of the DVD.
Now let's imagine we're a point at the edge of the DVD, we're undergoing a circular motion. Each minute we will complete a circular track 7200 times, now we need to know the distance we travel each turn. The perimeter of the DVD, a circular object is:
Know recall that:
We now need to know how much distance is traveled during a minute or 60 seconds:
Finally we divide this result with t=60 seconds:
Where the distance units were named units as the length unit is not specified in this exercise.<span />
A blue star has the hottest temperature.
Answer: Option B
<u>Explanation:
</u>
Stars are composed of gases which ignite themselves and converge in a spherical shape. Their energy is stored in a specific spherical structure depending upon their gravity. Each star has its own gravity formed by the mass of igneous gas combined to form a star.
They illuminate the cosmic area and their lights can travel much longer distances. The stars can be classified based on spectral frequency or the light they are emitting and also based on their temperature. Thus, the star with the coolest temperature is termed as Red stars and the star with the hottest temperature is termed as blue stars.
Answer:
The Milky Way contains over 200 billion stars, and enough dust and gas to make billions more. The solar system lies about 30,000 light-years from the galactic center, and about 20 light-years above the plane of the galaxy.
Explanation:
hope I answerd your question
Answer:
wut goes up must come down i dunno lol
Explanation:
I’m not sure I’m just gonna assume that the flashlight closed too the wall is gonna be brighter because most of it’s light is directed on the wall rather then the one further back is kinda pointed everyone else & I think it relates to stars as if the brighter the star the closed it is to earth ?