an aircraft has a take of mass of 320000 kg. each of the 4 engines can produce a maximum force of 240 kN, what is its maximum acceleration​

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.