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Kryger [21]
3 years ago
5

A large luminosity star ... A: is always at a larger distance than a small luminosity star B: emits more light than a low lumino

sity star C: is always redder than a star with a small luminosity D: is at a lower temperature than a small luminosity star E: is always at a smaller distance than a small luminosity star
Physics
2 answers:
svetoff [14.1K]3 years ago
4 0

Answer:

Option B

Explanation:

Luminosity of the star can be defined as the amount of light that is emitted from star's surface.

  • Luminosity of a star is an intrinsic characteristic trait of a star and does not vary with the distance, it remains same for a particular star.
  • It is not the luminosity but the apparent brightness of the star that vary with the distance.
  • The larger the surface of the star, the more the emitted light form it and hence greater luminosity.
  • The more the surface are of the star, the more nuclear reactions it will have and hence, the temperature will be higher.
Greeley [361]3 years ago
3 0

Answer:

B: emits more light than a low luminosity star

Explanation:

Luminosity is an absolute measure of radiated electromagnetic power, the radiant power emitted by light scattering object. A star with large luminosity will have more measure of radiated electromagnetic power meaning it will emit more light than a low luminosity star. Luminosity has nothing to do with the color of star or distance.

Rest all options are wrong and only option b fits appropriate in the explaination above.

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True

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6 0
3 years ago
Two ropes support a load of 478 kg. The two ropes are perpendicular to each other, and the tension in the first rope is 2.2 time
sveta [45]

Answer:

T₂ = 1937.68 N

Explanation:

First, we will calculate the weight of the object:

W = mg = (478\ kg)(9.81\ m/s^2)\\W = 4689.18\ N

Now, we will calculate the resultant tension in the ropes. Since the ropes are perpendicular. Therefore,

T = \sqrt{T_1^2+T_2^2}\\

where,

T = Resultant Tension

T₁ = Tension in rope 1

T₂ = Tension in rope 2

According to the given condition tension in the first rope is 2.2 times the tension in the second rope:

T₁ = 2.2 T₂

Therefore

T = \sqrt{(2.2T_2)^2 + T_2^2}\\\\T =  2.42T_2

Now, the weight of the object must be equal to the resultant tension for equilibrium:

T = W\\2.42T_2 = 4689.18\ N\\\\

<u>T₂ = 1937.68 N</u>

5 0
3 years ago
Which of the following is not true about arid deserts?
andrezito [222]

Answer:

The answer is actually b

Explanation:

B.

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3 0
3 years ago
Explain why the mass and weight should not be used interchangeably?
Sauron [17]
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4 years ago
A conceptual model is based off of
Klio2033 [76]
<h2>Answer</h2>

Tha conceptual model depends upon the process flow.

<h2>Explanation</h2>

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