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A man exerts a northward force of 100 newtons on a 50 kilogram box which sits on a level floor.
If the frictional force is 80 newtons.
What is the magnitude of the northward acceleration of the box?
Ans- 0.4 Meters per second squared
1. What evidence suggests that light is a wave? What evidence suggests that light is a particle? 2. In what sense does the "information age" depend on the bending of light?
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does lights of different wavelengths help us to see different colour
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