A 115kg football player moves a 135 kg training sled with a constant velocity. The ground has a u = 0.4. Circle the 3rd Law pair between the two objects. 2) Determine the amount of traction the football player has. ​

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

From the perspective of an employee that effective channeling of work related information and concerns

Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match