1. Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer by radiation from 2 m² of 1199 deg C fresh lava into 35 deg C surroundings, assuming lava's emissivity is 1.2. o=5.67x10-8 J/(s m² °C) Use the sign convention for heat leaving or entering the system. Q t = kW
1. Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer by radiation from 2 m² of 1199 deg C fresh lava into 35 deg C surroundings, assuming lava's emissivity is 1.2. o=5.67x10-8 J/(s m² °C) Use the sign convention for heat leaving or entering the system. Q t = kW
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Transcribed Image Text:1. Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer by
radiation from 2 m² of 1199 deg C fresh lava into 35 deg C surroundings, assuming lava's emissivity is
1.2.
o=5.67x10-8 J/(s m² °C)
Use the sign convention for heat leaving or entering the system.
Q
t
=
kW
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