Biology Forums - Study Force

Science-Related Homework Help Physics Topic started by: Annmarie on Feb 23, 2018



Title: What is the work done on the gas as it expands from pressure P1 and volume V1 to pressure P2 and ...
Post by: Annmarie on Feb 23, 2018
What is the work done on the gas as it expands from pressure P1 and volume V1 to pressure P2 and volume V2 along the indicated straight line?
 
   
   
  a.
  (P1  P2)(V1  V2)/2
  b.
  (P1 + P2)(V1  V2)
   
  c.
  (P1 + P2)(V1  V2)/2
  d.
  (P1 P2)(V1 + V2)



[Ques. 2] An ideal gas at pressure, volume, and temperature, P0, V0, and T0, respectively, is heated to point A, allowed to expand to point B also at As temperature 2T0, and then returned to the original condition. The internal energy decreases by 3P0V0/2 going from point B to point T0. How much heat left the gas from point B to point T0?
 
   
   
  a.
  0
  b.
  P0V0/2
   
  c.
  3P0V0/2
  d.
  5P0V0/2



[Ques. 3] An ideal gas at pressure, volume, and temperature, P0, V0, and T0, respectively, is heated to point A, allowed to expand to point B also at As temperature 2T0, and then returned to the original condition. The internal energy decreases by 3P0V0/2 going from point B to point T0. In going around this cycle once, which quantity equals zero?
 
   
   
  a.
  the net change in internal energy of the gas
   
  b.
  the net work done by the gas
   
  c.
  the net heat added to the gas
   
  d.
  All three are zero.



[Ques. 4]

Consider the curve f(x) = A cos(2x/). The wavelength of the wave will be:
 
   


   
  a.
  the distance 0 to A.
   
  b.
  twice the distance 0 to A.
   
  c.
  the distance x2 to x3.
   
  d.
  twice the distance x2 to x3.



[Ques. 5]

A charge of +2 C is at the origin. When charge Q is placed at 2 m along the positive x axis, the electric field at 2 m along the negative x axis becomes zero. What is the value of Q?
   


   
  a.
  3 C
   
  b.
  6 C
   
  c.
  7 C
   
  d.
  8 C



[Ques. 6]

Two charges, +Q and Q, are located two meters apart and there is a point along the line that is equidistant from the two charges as indicated. Which vector best represents the direction of the electric field at that point?
   


   
  a.
  Vector EA
   
  b.
  Vector EB
   
  c.
  Vector EC
   
  d.
  The electric field at that point is zero.



[Ques. 7] If C1 = 30 F, C2 = 25 F, C3 = 15 F, and V0 = 24 V, determine the energy stored by C2.
 
   
  a.
  2.3 mJ
   
  b.
  4.8 mJ
   
  c.
  3.6 mJ
   
  d.
  1.3 mJ
   
  e.
  3.2 mJ



[Ques. 8]

What is the equivalent capacitance of the combination shown?
   


   
  a.
  24 F
   
  b.
  100 F
   
  c.
  12 F
   
  d.
  4.6 F



[Ques. 9] What is the equivalent capacitance of the combination shown?
 
   
  a.
  29 F
   
  b.
  10 F
   
  c.
  40 F
   
  d.
  25 F



[Ques. 10] If C = 14 F, what is the equivalent capacitance for the combination shown?
 
   
  a.
  28 F
   
  b.
  17 F
   
  c.
  0.29 F
   
  d.
  7.0 F
   
  e.
  670 F


Title: What is the work done on the gas as it expands from pressure P1 and volume V1 to pressure P2 and ...
Post by: Marin on Feb 23, 2018
Content hidden