You shine an orange laser (580 nm) on a double slit in an experiment you perform in your physics lab. measuring with a protractor you see that the interference pattern makes the first fringe at 13.0° with the horizontal. what is the separation between the slits?

The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.