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Stella [2.4K]
3 years ago
11

Which of the following is an important property of stars, because it provides some information about the temperature of a star?

Group of answer choices The shape of the star The distance to the star The star's color The star's name
Physics
2 answers:
Burka [1]3 years ago
6 0

Answer:

The stars color

Explanation:

Scientists know how a Star is by their color like blue is hotter than red

drek231 [11]3 years ago
3 0

Answer:

Explanation:

hshsjs

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The 2 positively charged particles would repel each other.
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4 years ago
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A disk has 128 tracks of 32 sectors each, on each surface of eight platters. The disk spins at 3600 RPM and takes 15 ms to move
Serga [27]

Answer:

the longest time needed to read an arbitrary sector located anywhere on the disk is 2971.24 ms

Explanation:

 Given the data in the question;

first we determine the rotational latency

Rotational latency = 60/(3600×2) = 0.008333 s = 8.33 ms

To get the longest time, lets assume the sector will be found at the last track.

hence we will access all the track, meaning that 127 transitions will be done;

so the track changing time = 127 × 15 = 1905 ms

also, we will look for the sectors, for every track rotations that will be done;

128 × 8.33 = 1066.24 ms

∴The Total Time = 1066.24 ms + 1905 ms

Total Time = 2971.24 ms

Therefore, the longest time needed to read an arbitrary sector located anywhere on the disk is 2971.24 ms

7 0
3 years ago
Steve tunes an old-fashioned radio that has an antenna made from a 3.0-cm-long solenoid with a cross-sectional area of 0.50 cm2
sukhopar [10]

Answer:

L = 1.88\times10^-^4 H

Explanation:

It is given that,

Length of the coil, l = 3 cm = 0.03 m

Area of cross section of the coil, A=0.5\ cm^2=0.00005\ m^2

Number of turns in the coil, N = 300

inductance of the coil is

L=\dfrac{\mu_oN^2A}{l}

L=\dfrac{4\pi\times 10^{-7}\times (300)^2\times 5\times 10^{-5}}{0.03}\\L = 1.88\times10^-^4 H

So, the inductance of the coil is 1.88× 10⁻⁴H

5 0
3 years ago
The unit of length most suitable for measuring the thickness of a cell phone is a
Elis [28]

centimeter or millimeter.

Explanation:

The unit of length most suitable for measuring the thickness of a cell phone is centimeter or millimeter.

Length refers to how long a material is.

  • There are different units of length.
  • Smaller units that are microscopic are used to measure length dimensions that are very small
  • For example, nanometre is used to express microscopic length values.
  • Centimeters and millimeters are used for small dimensions that we can easily see.
  • Longer lengths can take the order of a yard, kilometer, miles e.t.c

Learn more:

Length brainly.com/question/13035995

#learnwithBrainly

8 0
4 years ago
How are chemical changes of matter related to the organization of the periodic table
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As elements in period are arranged according to increasing atomic weight with isotope as protium deuterium and trotium of h2 so chemical property are same but physical property different in period ic table
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