For the next few questions, let e denote the frame of reference of the earth, a the "air" frame of reference, and p an airplane. take the eastward direction to be positive. if the wind around the plane is blowing due west at 45 mph and the airplane is flying due east with an airspeed of 300 mph, what is the value of vea? (using the convention for subscripts introduced in your textbook.)

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.