A train traveling at 48 m/s begins to slow down as it approaches a bend in the tracks. If it travels around the bend at a speed of 14 m/s, and it takes 40 seconds to properly slow down, what is the acceleration acting on the train during this time? Please help 5 minutes left please!,

Sound is a disturbance that travels through a medium as a

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

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