(a) In a crash test, two midsize cars travel directly toward each other, each moving at a speed of 25.0 m/s. They collide head-on and stick together. Both have a mass of 1.80 x 10³ kg. The air surrounding the two cars has a temperature of 25°C. What is the change in entropy (in J/K) of the air surrounding the two cars as a result of the collision? (Ignore any energy carried away from the collision by sound. Assume the time it takes for the internal energy to dissipate as heat is negligible.) J/K (b) What If? A car with the same mass and moving with the same speed as above collides head-on with a bus, also moving at the same speed, but with a mass of 7.20 x 10³ kg. The two vehicles stick together after the collision. What is the change in entropy (in J/K) of the surrounding air immediately after the collision? J/K (c) For the collision in part (b), what is the change in entropy (in J/K) of the surrounding air from the point just after the collision to the point where the combined wreckage skids to a stop? J/K

(a) In a crash test, two midsize cars travel directly toward each other, each moving at a speed of 25.0 m/s. They collide head-on and stick together. Both have a mass of 1.80 x 10³ kg. The air surrounding the two cars has a temperature of 25°C. What is the change in entropy (in J/K) of the air surrounding the two cars as a result of the collision? (Ignore any energy carried away from the collision by sound. Assume the time it takes for the internal energy to dissipate as heat is negligible.) J/K (b) What If? A car with the same mass and moving with the same speed as above collides head-on with a bus, also moving at the same speed, but with a mass of 7.20 x 10³ kg. The two vehicles stick together after the collision. What is the change in entropy (in J/K) of the surrounding air immediately after the collision? J/K (c) For the collision in part (b), what is the change in entropy (in J/K) of the surrounding air from the point just after the collision to the point where the combined wreckage skids to a stop? J/K

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

(a) In a crash test, two midsize cars travel directly toward each other, each moving at a speed of 25.0 m/s. They collide head-on and stick together. Both have
a mass of 1.80 x 10³ kg. The air surrounding the two cars has a temperature of 25°C. What is the change in entropy (in J/K) of the air surrounding the two
cars as a result of the collision? (Ignore any energy carried away from the collision by sound. Assume the time it takes for the internal energy to dissipate
as heat is negligible.)
J/K
(b) What If? A car with the same mass and moving with the same speed as above collides head-on with a bus, also moving at the same speed, but with a
mass of 7.20 x 10³ kg. The two vehicles stick together after the collision. What is the change in entropy (in J/K) of the surrounding air immediately after
the collision?
J/K
(c) For the collision in part (b), what is the change in entropy (in J/K) of the surrounding air from the point just after the collision to the point where the
combined wreckage skids to a stop?
J/K

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