Occasionally, huge icebergs are found floating on the ocean\'s currents. Suppose

Question

Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such iceberg is 147 km long, 30.4 km wide, and 204 m thick. (a) How much heat in joules would be required to melt this iceberg (assumed to be at 0 °C) into liquid water at 0 °C? The density of ice is 917 kg/m3. (b) The annual energy consumption by the United States in 1994 was 9.3 x 1019 J. If this energy were delivered to the iceberg every year, how many years would it take before the ice melted?

Explanation / Answer

let volume of ice,v=147000*30400*204 m^3 now,weight,m=917*v 1.Q=mL L=latent heat of fusion of water=334kj/kg =>Q=147000*30400*204*917*334=2792138057856*10^8 J=27.921*10^19 J 2.years it would supply energy=Q/9.3*10^19 =27.921*10^19/9.3*10^19 =3 years Hope my answer helps you.thank you.

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