3. When Mr. Ramirez visits East High School, Rather than take the stairs Mr. Ramirez slides down the hand rail of the stairs at Weslaco East high school at 30°
to the horizontal. a) If Mr. Ramirez has a mass of 100 kg and the coefficient of
sliding friction between him and the hand rail is 0.20, what is the force of friction
impeding her motion down the rail? *
Your answer

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.