Solution 3

Solution 3 - Physics 2C Summer Session I Quiz #3 1. The...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Quiz #3 1. The speed of sound is given by v s = p From the ideal gas law the molar density is n=V = P=RT: Hence the mass density on Titan is ± = nm mol =V = m mol 3 P RT = : 028 3 1 : 01 10 5 8 : 314 293 ± = : 387 kg=m 3 (ideal gas law). For a pressure of P = 1 : 5 10 5 Pa the speed of sound is v s = p 1 : 4 1 : 5 10 5 =: 387 = 737 m= sec ( B ) ² = 10 log ( I=I o ) : Hence ² 2 ± ² 1 = 10 log ( I 2 =I 1 ) = ± 12 I 2 =I 1 = 10 1 : 2 = : 0631 or I 1 =I 2 = 16 ( E ) 3. In a Carnot cycle the net work is done during the isothermal processes. For this Carnot cycle that is W = (( PV ) h ± ( PV ) c ) ln 2 W = (800 ± 661) ln 2 = 96 : 4 J The e¢ ciency is given by e = W Q h = 96 : 4 800 ln 2 = 17% ( A ) 4. The maximum and minimum temperatures can be found from the ideal gas law, T h = ( PV ) h nR = 800 : 2 8 : 314 = 481 K T c = ( PV ) c nR = 661 : 2 8 : 314 = 397 : 5 K The Carnot e¢ ciency is given by e
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/22/2008 for the course PHYS 2c taught by Professor Wurthmeir during the Summer '05 term at UCSD.

Page1 / 3

Solution 3 - Physics 2C Summer Session I Quiz #3 1. The...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online