2. When a fire truck moves away from you, you hear the pitch of the siren go down. This is because of
(10 Points)
resonance
beats
harmonic
the Doppler effect

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.

What is the magnitude of the gravitational force acting on the earth due to the sun?

What energy transformations occur each time the skateboarder rolls up the ramp?