A well-insulated rigid tank contains 30 kg of saturated liquid-vapor mixture of H2O of quality 20% at 100 kPa. Electric heater inside the tank is turned on and kept until all liquid is vaporized. (4a). (5p) Please determine the work done by the electric heater during this process. (4b). (4p) Please determine the entropy change of the water during this process. (4c). (3p) Will Sgen be positive for this process

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box