A gas expands from an initial volume of 0.040 m3 to a final ...

[sammy]

A gas expands from an initial volume of 0.040 m3 to a final volume of 0.085 m3 while its pressure increases linearly with the volume (so that the process follows a straight-line path in a pV diagram) from 110 kPa to 225 kPa.
 
  How much work is done on the gas during this expansion? A) -5.2 kJ
  B) -7.5 kJ
  C) -7.8 kJ
  D) -11 kJ
  E) -12 kJ

Question 2

A single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0 from central maximum.
 
  If monochromatic light of 530.0-nm wavelength is used for the illumination, what is the width of the slit?
  A) 825 nm
  B) 791 nm
  C) 757 nm
  D) 723 nm
  E) 689 nm

[k.lashomb]

Answer to Question 1

B

Answer to Question 2

A

[sammy]

Gracias!

[daiying98]

Excellent