When a gas is taken from a to c along the curved path in Figure 3, the work done on the gas is 35 J and the heat removed from the gas is 63 J. Along path abc, the work done on the gas is 48 J. (a) Calculate the thermal energy exchanged between the gas and surroundings for path abc. Is the heat removed from the gas or added to the gas? Justify your answer. [7 marks] (b) If Pb - — 2Pc, calculate the work done on the gas for the path cda. [3 marks] b a c d o Figure 3​

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction

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.