21. light changes its direction when travelling through a new medium because denser mediums have a higher angle of refraction.
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Answer:
1.) 6 hectokisses 50 times
2.) Millionaire
Explanation:
Answer:
The input force (effort) is the amount of effort used to push down on a rod, or pull on a rope in order to move the weight. In this example, the force the little guy is using to pull the elephant is the input force.
Explanation: