(1.7) For the following functions shown: Find Ex, and Ey, the energies of the signals x(t) and y(t) shown in Fig. 1.3.
Sketch the signals x(t)+y(t) and x(t)-y(t).
Show that the energies of either of these two signals are equal to Ex + Ey.
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Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.