A gas is enclosed in a container fitted with a piston of cross section average 0.1 meter per square. The pressure of gas is maintained at 800 newton into meter per square. When heat is slowly transferred .The piston is pushed up through a distance of 4cm if 42 j is heat is transferred to the system during the expansion what is the expansion what is the change internal energy of the system

Apoint charge +q is at the origin. a spherical gaussian surface centered at the origin encloses +q. so does a cubical surface centered at the origin and with edges parallel to the axes. select "true" or "false" for each statement below. the electric flux through the spherical surface is greater than that through the cubical surface. suppose (for this statement only), that q is moved from the origin but is still within both the surfaces. the flux through both surfaces remains unchanged. the area vector and the e-field vector point in the same direction for all points on the spherical surface. the e-field at all points on the spherical surface is equal due to spherical symmetry. the flux through the spherical gaussian surface is independent of its radius.