Physics, 10.07.2019 01:00 lillianfrederi

Anew star has been discovered that has a peak electromagnetic wavelength of 400.00 nm. what is the star's surface temperature?

Answers: 1

Show answers

Answers

The surface temperature of the new star which is discovered with peak electromagnetic wavelength of 400.00 nm is 7225 kelvin.

What is surface temperature?

Surface temperature of an object is the temperature at the surface or the outside plane of that object.

The surface temperature of a object is given by the Wien's law as,

$T=\dfrac{b}{\lambda}$

Here, λ is the wavelength and (b) is the Wien's displacement constant.

The electromagnetic wavelength of the star is given as 400.00 nm. Put the value of this wavelength in the Wien's law to find the star's surface temperature as,

$T=\dfrac{b}{400\times10^{-9}}$

The value of Wien's displacement constant is $2.89\times10^{-3}\rm mK$ . Thus put the value in the above equation as,

$T=\dfrac{2.89\times10^{-3}}{400\times10^{-9}}\\T=7225\rm K$

Thus, the surface temperature of the new star which is discovered with peak electromagnetic wavelength of 400.00 nm is 7225 kelvin.

Learn more about the surface temperature here;

link

Answer from: coricori8

As per Wein's displacement law

the peak intensity wavelength is related to its temperature

it is given by relation

$\lambda = \frac{b}{T}$

here given that

$\lambda = 400 nm$

$b = 2.89 * 10^{-3}$

now from above formula

$400 * 10^{-9} = \frac{2.89 * 10^{-3}}{T}$

$T = \frac{2.89 * 10^{-3}}{400 * 10^{-9}}$

T = 7225 K

so temperature of the star will be 7225 Kelvin

Answer from: Quest

number of electrons for neutral cl

Answer from: Quest

Is a vector quantity that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Another question on Physics

Physics, 21.06.2019 16:00

Stion 13 of 20 : select the best answer for the question. 13. if a certain mass of mercury has a volume of 0.002 m3 at a temperature of 20°c, what will be the volume at 50°c? a. 0.002021624 m3 b. 0.004021624 m3 c. 0.000010812 m3 d. 0.002010812 m3

Answers: 1

Answer

Physics, 21.06.2019 22:30

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Answers: 1

Answer

Physics, 22.06.2019 05:00

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

Answers: 3

Answer

Physics, 22.06.2019 21:10

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate

Answers: 1

Answer

You know the right answer?

Anew star has been discovered that has a peak electromagnetic wavelength of 400.00 nm. what is the s...

Questions