Question

In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 155 km long, 40.0 km wide, and 250 m thick. (a) What is the mass of this iceberg in kg, given that the density of ice is 917 kg/m3? kg (b) How much heat transfer (in joules) is needed to melt it? J (c) How many years would it take sunlight alone to melt ice this thick, if the ice absorbs an average of 100 W/m2, 13.00 h per day? yr

Answer 1

@ of L = 155 km, W= 40 km, t = 250m p=917 kg/m3 mass M = vp = L. Wit. P = (158x10²x40x10²x250 M = 142135x10 10 917) kg = ) 15 M = 1.42x10 kg © for ice C = 9.108 KJ/Kg.K 4 L = 9230 K KJ/kg Heat @ =lm - 2230x1.42x10'5 KJ 3.169x102 Joule 5) 0 - 316961050x1013] = 0 = 3.169x10² Joule PO I = 100 W/m2, = 13 hol (13x3600) s perday Ida 3.169x16810 S ♡ time t = H.A 100% 155000x 40x1000 -) t = 51122.75x105 s to 5112275000 r=299.3 13*3600*365 In yrs ; yra 3 ya