Using an orbit size of 8 kpc, and a period of 225 million years, the mass of our Galaxy is found to be closest to (hint: convert radius to meters and time seconds, then calculate the orbital speed in meters/sec. Once you do that determine the mass contained within the orbit in solar masses.)

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.