An ideal gas is maintained at a constant pressure of 7.0 x 104 N/m^2 during an isobaric process while its volume decreases by 0.20 m^3. What work is done by the system on its environment?
A 1.4x10^4j
b 3.5x 10^5 j
C -1.4x10^4j
d -3.5x 10^5j

50.)the diagram below represents the wave fronts produced by a point source moving to the right in a uniformmedium. observers are located at points a and b.compared to the wave frequency and wavelength observed at point a, the wave observed at point b has a(1) higher frequency and a shorter wavelength(2) higher frequency and a longer wavelength(3) lower frequency and a shorter wavelength(4) lower frequency and a longer wavelength