Earth has approximately 600,000,000 meters of coastline. if we assume this entire length of coastline has sandy beaches 60 meters wide and 20 meters deep, how many cubic meters of sand are on the beaches? express your answer to the correct number of significant figures.

Nonmetal halogen family atmoic mass 35

What is the percentage composition of carbon in the compound ch4

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.