You are a paleontologist who has discovered a t-rex nesting site surrounded by crushed velociraptor heads. you want to find out if the crushing forces of the t-rex jaw could have been responsible for the carnage. the length of the jaw is 1.2 m, the moment arm of the masseter muscle is 15 cm, and the diameter of velociraptor head is 30 cm. (a) draw a free body diagram of t-rex mandible (lower jaw) when crushing a velociraptor head. treat the joint as a pi joint.

1kg of water contained in a piston-cylinder assembly undergoes two processes in series from an initial state where the pressure is 3.0 bar and the temperature is 150°c process 1-2: the water is compressed isothermally to a volume of 0.25 m^3 with 120 kj of work being done to the system. process 2-3: the water is heated at constant volume to a final pressure of 10 bar. a. find the change in internal energy for the system. b. calculate the amount of heat transferred, in kj. c. sketch both processes on a t-v diagram. (196.33 kj/kg, 76.33 kj)