At a certain plane in space, the particle flux density is isotropic for 0 ws1 and zero for negative w, where w is the cosine of the angle made by the particle direction and a normal to the plane of reference. in that plane, what is (a) jn (w), the angular distribution of the flow rate, and (b) jt, the flow rate for all positive w?

Which type of wave can travel without a medium

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.