Recent content by xenoflauge

Homework Statement balloons are required to lift 20 metric tons. the pressure of helium is 101.325kpa. temp=21.1degcelsius. what should be the diameter of the balloon if it was spherical in shape in order to lift the weight? Homework Equations buoyant force?? The Attempt at...

Homework Statement A steel can, open at one end, closed at the other, 8inches high, with a diameter of 3inches, is submerged in water vertically with the open end facing down. What is the height of the air inside the can when: a) the cans closed end is in level with water surface? b)...