Our Sun emits most of its radiation at a wavelength of 550 nm. If a star were 4.00 times hotter than our Sun, it would emit most of its radiation at a wavelength of .

88.0015184nm

Explanation:

By wein's law

λT= 2.898x10^{-3}kelvin meter

where;

λ = wavelenght

T= Temperature (in kelvin)

2.898x10^{-3}mk = Wein's constant

so

λ x T(sun)= 2.898x10^{-3}

550 x 10\small ^{-9}x T (sun) =2.898x10^{-3}

T (sun) = 2.898x10^{-3}/ 550 x 10\small ^{-9}

T (sun) = 5269.09090909 kelvin

T (sun) = 5.269x10^{3}kelvin

Now, Given T( star )= 4 x T (sun)

so,

λ (star) x T( star ) = 2.898x10^{-3}kelvin meter

λ(star) x 4 x T (sun) = 2.898x10^{-3}kelvin meter

λ (star) x 4 x 5.269x10^{3}kelvin = 2.898x10^{-3}kelvin meter

λ(star) = ( 2.898x10^{-3}kelvin meter)/ (4 x 5.269x10^{3}kelvin)

λ (star) = 8.80015184 x 10^{-7}meter

λ (star) = 88.0015184 x 10^{-9}meter

λ (star) = 88.0015184 nm

i only have few minutes according to the map above, which shows religious cultural regions, what two religions are most commonly practiced in africa? a. christianity and buddhism b. buddhism and hinduism c. islam and christianity d. hinduism and islam