Atank contains 0.568 mol of molecular nitrogen (n2). determine the mass (in grams) of nitrogen that must be removed from the tank in order to lower the pressure from 44.7 to 22.8 atm. assume that the volume and temperature of the nitrogen in the tank do not change.

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Explain why electric current cannot exist if a current doesn't have a voltage source.

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?