Physics, 16.12.2019 19:31 bellamvento
To understand the implications of the second law of thermodynamics. the second law of thermodynamics explains the direction in which the thermodynamic processes tend to go. that is, it limits the types of final states of the system that naturally evolve from a given initial state. the second law has many practical applications. for example it explains the limits of efficiency for heat engines and refrigerators. to develop a better understanding of this law, try these conceptual questions.
the thermodynamic processes that occur in nature
(a) convert thermal energy into mechanical energy
(b) lead to a more ordered state
(c) cannot be reversed
(d) do not conserve energy
Answers: 1
Physics, 21.06.2019 22:20
1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?
Answers: 1
Physics, 22.06.2019 01:10
Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)
Answers: 3
Physics, 22.06.2019 01:30
Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33
Answers: 2
To understand the implications of the second law of thermodynamics. the second law of thermodynamics...
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