Question number 5 how can i solve the question ?

enter image source here

1 Answer
Junaid Mirza
May 29, 2018

Unit of #σ# is #"Watt/(m"^2"K"^4")"#

Explanation:

#E/t = σAT^4#

Units of

  • #"E = Joule"#
  • #"t = second"#
  • #"A = m"^2#
  • #"T = Kelvin"#

On rearranging the equation

#σ = E/(t × AT^4)#

Unit of #σ# is

#σ = "J"/("s × m"^2 × "K"^4)#

#σ = "Watt"/("m"^2\ "K"^4) color(white)(...)[∵ "Watt" = "J"/"s"]#

Related questions
Impact of this question
454 views around the world
You can reuse this answer
Creative Commons License