Vector A with arrow has a magnitude of 35 units and points in the positive y direction. When vector B with arrow is added to A with arrow, the resultant vector A with arrow + B with arrow points in the negative y direction with a magnitude of 13 units. Find the magnitude and direction of B with arrow.

The plum pudding model of the atom states that ?

As the distance from a magnet increases, what happens to the magnet force?

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.