A boy A having a weight of 80 lb and a girl B having a weight of 70 lb stand motionless at the ends of the toboggan, which has a weight of 25 lb. A walks to B and stops, and both walk back together to the original position of A. Neglect friction between the toboggan and the snow.
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What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force
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Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points
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Is the number of complete movements of a wave per second.
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A boy A having a weight of 80 lb and a girl B having a weight of 70 lb stand motionless at the ends...
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