A gas undergoes isochoric heating, during which it gains 5470 J of heat and attains a pressure of 3.45 X 105 Pa. Following this, it experiences an isobaric compression that is also adiabatic, in which its volume decreases by 6.84 X 10-3 m3. Find the total change in the internal energy of the gas for this two-step process. Be sure to include the algebraic sign ( or -) of the total change in the internal energy.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?