Respecting boundaries in each of the following interactions indicate whether the system does (posi- tive) work, has (positive) work done on it or neither and whether the system boundary is effectively diathermal or adiabatic. "effectively", here means your answers should reflect whether a significant amount of heat actually does flow during the given time. provide brief (one word to one sentence) justifications. 1.a the system is the air contained within both a bicycle tire and the pump connected to it. the pump plunger is pushed down, forcing air into the tire. this interaction is over before the air significantly cools. 1.b the system is the water and water vapor within a metal pot covered by a tight-fitting lid. the pot is placed over a flame. the temperature and pressure of the water and water vapor increase. 1.c following the interaction in part b the lid flies off the pot. assume this happens very quickly, too quickly for temperature to change much 1.d the system is the air contained within a room. the room doors and windows are closed and of ordinary construction. a fan within the room is left running for one hour 1.e the system is a mixture of hydrogen and oxygen contained within a rigid metal container. the mixture combusts quickly and then remains in the container
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Physics, 22.06.2019 03:30
What is the momentum of a 2 kg object moving at 15 meters per second
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Physics, 22.06.2019 04:30
In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.
Answers: 1
Physics, 22.06.2019 13:50
Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?
Answers: 3
Physics, 22.06.2019 14:30
The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
Answers: 1
Respecting boundaries in each of the following interactions indicate whether the system does (posi-...
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