Problem 20.20 One mole of monatomic gas undergoes a Carnot cycle with TH = 380 °C and T, = 220 °C. The initial pressure is Pa = 8.5 atm (see Figure 20-7 in the textbook). During the isothermal expansion, the volume doubles. Part A Find the values of the pressure at the points a, b, c, and d. Express your answers using two significant figures. Enter your answers numerically separated by commas. ANSWER: Pa, P, Pe, Pa = 6.3-10-3, 12.608, 19.22, 9.61 atm Incorrect; Try Again; 5 attempts remaining Problem 20.20 One mole of monatomic gas undergoes a Carnot cycle with TH = 380 °C and TL = 220 °C. The initial pressure is Pa = 8.5 atm (see Figure 20-7 in the textbook). During the isothermal expansion, the volume doubles.

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.