Explore travel by balloon cylinder before departure he packed gas helium volume.400 cubic meters and gas helium balloon in the 65-kilogram mass this. How much density
Whether you're traveling with a balloon containing gas exploration. Before leaving, he packed helium gas at a volume of 400 cubic meters and a mass of 65 kilograms, this helium gas in the balloon. How much density
Luk explore travel by balloon gas. Before departing he packed with helium gas volume.400 cubic meters, and the mass 65 kg helium gas in this balloon density much.