Part A

How long does it take the Sun to melt a block of ice at $\backslash (0^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash )$ with a flat horizontal area $\backslash (1\mathrm{.}0\backslash$mathrm$\{$~m$\}^\{2\}\backslash )$ and thickness $1\mathrm{.}7$ cm $?$ Assume that the Sun's rays make an angle of $\backslash (41^\{\backslash$circ$\}\backslash )$ with the vertical and that the emissivity of ice is $0\mathrm{.}050.$

Express your answer using two significant figures.

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t$=$

$\backslash ]$

X Incorrect; Try Again; $5$ attempts remaining