Asystem obeys the relation u=a/v^2exp(s/r) n moles of this substance, initially at temperature t, and pressure pb, are expanded isentropically (s = constant) until the pressure is halved. what is the final temperature t_j (with respect to t_0)?

Chuck gimp l synology finnick full by noon l hub j

Iwould have to say sorry i can't elaborate more. hope this though!

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.