How much force is needed to accelerate a 68 kilogram skier at a rate of 1.2 m/sec^2?

f=ma is newton's second law ...68x1.2=68+2/10x68 = 68+13.6=81.6n

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

33: answer is c

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5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000