A block m1 of mass 40 kg on a rough horizontal surface is connected to a ball m2 of mass 30 kg by a lightweight cord over a lightweight, frictionless pulley as shown. A force of magnitude 20 N at an angle, 40degrees, with the horizontal is applied to the block as shown, and the block slides to the right. The coefficient of kinetic friction between the block and surface is 0.4. Determine the magnitude of the acceleration of the two objects.

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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gas and liquid

d) physical means can be used to separate the components of air.