Arigid tank of 1.1 m3 is divided into two equal compartments by a partition. one compartment contains o2 at 300 k and 100 kpa, and the other compartment contains n2 at 350 k and 200 kpa. now the partition is removed, and the two gases are allowed to mix. the heat gain from the surrounding air at 400 k during this process is 50 kj. determine (a) final mixture temperature, in k, (b) final mixture pressure, in pa, and (c) total entropy production, in kj/k. (cv, o2

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

When you turn on a battery-operated device, an electrical circuit is

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.