An object of mass M is attached to a string of negligible mass and spun in a vertical circle of radius R, as shown in the figure above. As the object’s height increases, its speed decreases such that the object-Earth system’s total mechanical energy remains constant. By how much does the object’s kinetic energy decrease in moving from point O, the lowest point on the circle, to point P, the highest point on the circle?
Answers: 3
Physics, 21.06.2019 16:40
Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge
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Physics, 21.06.2019 23:20
Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons
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Physics, 23.06.2019 03:50
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Physics, 23.06.2019 08:00
How are elastic and inelastic collisions different? give two or more ways. your answer should have at least 2 sentences.
Answers: 1
An object of mass M is attached to a string of negligible mass and spun in a vertical circle of radi...
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