A stereo rests on a horizontal surface. The normal reaction of the surface on the stereo is 13N vertically upwards. What is the mass of the stereo, in kilograms to two significant figures? Take the magnitude of the acceleration due to gravity to be 9.8ms-2

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Chapter5: Newton's Law Of Motion
Section: Chapter Questions
Problem 94CP: A 10.0-kg object is initially moving east at 15.0 m/ s. Then a force acts on it for 2.00 s, after...
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A stereo rests on a horizontal surface. The normal reaction of the surface on the stereo is 13N vertically upwards. What is the mass of the stereo, in kilograms to two significant figures?

Take the magnitude of the acceleration due to gravity to be 9.8ms-2

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