Occasionally, huge icebergs are found floating on the ocean's currents. suppose one such iceberg is 142 km long, 25.3 km wide, and 198 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?

4. a 75.0 g piece of ag metal is heated to and dropped into 50.0 g of water at the final temperature of the mixture is what is the specific heat capacity of silver? 5. a 465 g chunk of iron is removed from petrucci, ralph h.. general chemistry (p. 290). pearson education. kindle edition.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.