Ablock is pulled up a ramp inclined at 25 degrees. there is an applied force of 3.2 n, 20 degrees above the plans of the ramp. what is the coefficient of friction? what is the mass of the block?

hints given to us: use the angle and fa to find the sliding force
then use the equivalent triangle to find fn
then use ff and fn to find coefficient of friction.

i am lost at the equivalent triangle.

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.