Why are many scientists concerned about humans adding large amounts of carbon to the atmosphere by burning fossil fuels (combust
ion)? A. When carbon is released into the atmosphere it floats into outer space, and is lost forever. B. The atmosphere has a limited capacity to absorb and recycle carbon naturally. C. If the atmosphere gains too much carbon, birds won't be able to fly. D. Carbon is a poisonous chemical, which can kill plants.
turntable with a moment of inertia of 7.2 × − ⋅ rotates freely with an angular speed of 6.5 ⁄ . Riding on the rim of the turntable, 2 from the center, is a hamster. When the hamster walks to the center of the turntable, the angular speed of the turntable becomes ⁄. What is the mass of hamster?