What information does a ship's sonar device use to determine the distance to the ocean floor? A. The speed of sound in water and the time it takes for a signal to return.

B. The temperature of the water and the temperature of the air above it.
C. The composition of the ocean floor and the water temperature near the ocean floor.
D. The mass of the ship and the volume of water displaced by the ship.

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.