Suppose that we look at a photograph of many galaxies. assuming that all galaxies formed at about the same time, which galaxy in the picture is the youngest? a. the one that is closest to us b. the one that appears smallest in size c. the one that is farthest away d. the one that is bluest in color e. the one that is reddest in color

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.