Maurice Tutor

(5)

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About Maurice Tutor

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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 399 Weeks Ago, 2 Days Ago
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 15 Feb 2018 My Price 5.00

cell phone charger

A 50 mm × 45 mm × 20 mm cell phone charger has a surface temperature of Ts = 33°C when plugged into an electrical wall outlet but not in use. The surface of the charger is of emissivity ε = 0.92 and is subject to a free convection heat transfer coefficient of h = 4.5 W/m2 ∙ K. The room air and wall temperatures are T∞ = 22°C and Tsur = 20°C, respectively. If electricity costs C = $0.18/kW ∙ h, determine the daily cost of leaving the charger plugged in when not in use.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 15 Feb 2018 07:02 PM My Price 5.00

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