If one knew the luminosity of a star and measured its apparent brightness, which expression would one use to calculate the distance to the star

Answers

Answer 1

The expression which one would use to calculate the distance to the star is distance = sq. root. of (luminosity/4pi*apparent brightness)

What is Distance?

This is a scalar quantity and refers to how much ground a body has covered.

In a situation where parameters such as luminosity of a star and measured its apparent brightness are known then the distance to the star will be:

Distance= √(luminosity/4pi*apparent brightness)

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Related Questions

He did it well ( into negative)

Answers

Answer:

He did not do it very well.

Explanation:

He did it well ( into negative)

= He didn't do it well....

The rate of change of momentum of a body free falling under gravity is equal to its? A. Velocity B. kinetic energy C. power D. weight

Answers

Answer:

weight

Explanation:

this is because of the lighter the object the faster it will be affected

Please help

how long have people used coal as a source of fuel
A. 200 years
B. 1000 years
C. 3000 years
D. 5000 years

Answers

Answer:

c. 3,000

Explanation:

I am guessing 3000 years

Help, Please.

A, B, C, or D

Answers

Answer:

Explanation:

Answer:

Explanation:

A momentum does not stop it is conserved

C momentum is a vector quantity while energy is a scalar there is a difference

D momentum can't be formed a new it is still conserved

(b) When the taps are opened, water flows in the pipe for some time. The diagram shows the final water level in container (i) Complete the diagram to show the final water level in container B.
(ii) Explain why the water starts to flow and then stops.

Answers

ii) The pressure difference in the two containers starts the flow of the water from container A to B until the pressure becomes equal in both the containers. Pressure causes force on water, because pressure = force/area

Why is the ‘dark side’ of the moon a misnomer?

Answers

Answer:

For starters, “dark side” is a misnomer. The far side may be constantly facing away from Earth, but as it orbits the Earth it sometimes faces the sun just as the bright side does. Thus the far side is subject to the same day/night temperature extremes as the side facing Earth.

Explanation:

The far side may be constantly facing away from earth, but as it orbits the earth it sometimes faces the sun just as the bright side does

a doctor measures the temperature of a patient to be 101 degrees . what is this temperature in kelvins

Answers

Answer:

the answer is 374.15 kelvins

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