Physics, 22.11.2019 21:31 b2cutie456
A100 g ball on a 55-cm-long string is swung in a vertical circle about a point 200 cm above the floor. the string suddenly breaks when it is parallel to the ground and the ball is moving upward. the ball reaches a height 600 cm above the floor. what was the tension in the string an instant before it broke? express your answer to two significant figures and include the appropriate units.
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Physics, 22.06.2019 02:10
How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by
Answers: 2
A100 g ball on a 55-cm-long string is swung in a vertical circle about a point 200 cm above the floo...
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