Chemistry, 13.06.2020 21:57, elyssa34972
You place a book on your desk, and then you begin to lift one edge of the desk. You make the following observations: At first the book does not move. When you lift the desk edge higher, the book begins to slide slowly. As you lower the desk slightly, the book slows down, then stops. Use your knowledge of forces and friction to explain your observations.
Answers: 1
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Chemistry, 22.06.2019 06:30, Pizzapegasus1
Three cards with holes are arranged in a straight line. a light is shined through the first cardβs hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
Answers: 1
You place a book on your desk, and then you begin to lift one edge of the desk. You make the followi...
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