Apolytropic process is one in which p vn = p1v n 1 = p2v n 2 = constant at all points in the process, where v = v /m is the specific volume of the substance. the exponent n is constant and depends on the nature of the process; for an ideal gas, isothermal process, for example, n = 1. say a substance is compressed from p1 = 100 kpa, v1 = 0.5 m3/kg to p2 = 300 kpa in a polytropic process for which n = 1.4. calculate the work performed during the compression, per unit mass. the integral formula for work per unit mass is obtained by dividing eq. (1) by the system mass, for which dv /m โ dv and w1โ2/m โ w1โ2.
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Physics, 22.06.2019 10:00
How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
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Physics, 22.06.2019 16:40
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
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Physics, 22.06.2019 19:50
An electron moves with a constant horizontal velocity of 3.0 ร 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)
Answers: 2
Apolytropic process is one in which p vn = p1v n 1 = p2v n 2 = constant at all points in the process...
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