Physics, 24.10.2019 20:43, benjamenburton1
Consider the following observations. classify each observation based on whether it is a real observation (a true statement of something we can actually see from earth) or one that is not real (a statement of something that does not really occur as seen from earth).
[real: true statements]
- mercury goes through a full cycle of phases
- moon rises in east, sets in west each day
- stars circle daily around north or south celestial pole
- positions of nearby stars shift slightly back and forth each year
- a distance galaxy rises in east, sets in west each day
[not real: false statements]
- we sometimes see a crescent jupiter
- a planet beyond saturn rises in west, sets in east
Answers: 1
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Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?
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Physics, 22.06.2019 17:40, yoongnzl
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Consider the following observations. classify each observation based on whether it is a real observa...
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