A frame made of metalic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic wire is reduced by `50%` the energy of the soap film will be changed by:

A frame made of a metallic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic wire is reduced by 50% ,the energy of the soap film will be changed by

A frame made of metallic wire enclosing a surface area A is covered with a soap film. If the area of the frame of metallic wire is reduced by 25%, the energy of the soap film will be changed by

A frame made of a metallic wire enclosing a surface area A is covered with a soap film . If the area of the frame of metallic wire will be changed by

A rectagular wire frame with one movable side is convered by a soap film (fig.). What work (erg) will be done if this side of the frame is moved a distance S = 2 mm ? The length of the movable side is l = 6cm . The surface tension of the soap film is alpha = 40 "dyne"//"cm" .

A rectagular wire frame with one movable side is convered by a soap film (fig.). What force should be applied to the movable side to counterbalance it ? What work will be done if this side of the frame is moved a distance S = 2 cm ? The length of the movable side is l = 6cm . The surface tension of the soap film is alpha = 40 "dyne"//cm .

A rectagular wire frame with one movable side is convered by a soap film (fig.). What force should be applied to the movable side to counterbalance it ? What work will be done if this side of the frame is moved a distance S = 2 cm ? The length of the movable side is l = 6cm . The surface tension of the soap film is alpha = 40 "dyne"//cm .