A woman who weighs 675 N is leaning against a smooth vertical wall, creating an angle of 68 degrees between her legs and the ground. It is 1.0 meters up her body to her center of mass and another 0.4 meters after that until her shoulder contacts the wall. Find the vertical and horizontal components of the force exerted on her shoes by the ground.

Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.