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nadya68 [22]
4 years ago
7

Arrange the stars based on their temperature. Begin with the coolest star, and end with the hottest star.

Physics
2 answers:
olganol [36]4 years ago
7 0

Answer:

Blue <White< Yellow< Red.

Explanation:

Star color  : Temp on surface

Blue :  ≥ 33,000 K

White :7,500–10,000 K

Yellow :  5,200–6,000 K

Red : 2,000–3,700 K

Kobotan [32]4 years ago
6 0

I do believe its red yellow white and then blue, hope this helps!!!!!!!!!111

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Two large parallel conducting plates carrying opposite charges of equal magnitude are separated by 2.20 cm. Part A If the surfac
alukav5142 [94]

Answer:

5308.34 N/C

Explanation:

Given:

Surface density of each plate (σ) = 47.0 nC/m² = 47\times 10^{-9}\ C/m^2

Separation between the plates (d) = 2.20 cm

We know, from Gauss law for a thin sheet of plate that, the electric field at a point near the sheet of surface density 'σ' is given as:

E=\dfrac{\sigma}{2\epsilon_0}

Now, as the plates are oppositely charged, so the electric field in the region between the plates will be in same direction and thus their magnitudes gets added up. Therefore,

E_{between}=E+E=2E=\frac{2\sigma}{2\epsilon_0}=\frac{\sigma}{\epsilon_0}

Now, plug in  47\times 10^{-9}\ C/m^2 for 'σ' and 8.85\times 10^{-12}\ F/m for \epsilon_0 and solve for the electric field. This gives,

E_{between}=\frac{47\times 10^{-9}\ C/m^2}{8.854\times 10^{-12}\ F/m}\\\\E_{between}= 5308.34\ N/C

Therefore, the electric field between the plates has a magnitude of 5308.34 N/C

5 0
3 years ago
Freya has a mass of 14kg she is running at 1.1m/s to the left when she runs into Eric, who is standing still. Eric has a mass of
Lilit [14]

Their final velocity  is 0.48 m/s.


We can use conservation of momentum to calculate the magnitude of the final velocity.


Momentum before collision is equal to the momentum after collision


m1v1+m2v2=(m1+m2)v


here, v is final velocity , assuming right side velocity as positive, and left side velocity as negative.


14*(-1.1)+18*(0)=(14+18)v


v=-0.48 m/s


Here, negative sign indicates that they both  will move in left direction.



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