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Firdavs [7]
4 years ago
6

The length of the side of a cube having a density of 12.6 g/ml and a mass of 7.65 g is __________ cm.

Physics
1 answer:
qaws [65]4 years ago
4 0

Density is the characteristic property of a substance.  It is the measure of mass of the substance divided by its volume (density= mass/volume). Manipulate the given formula to come up with the formula for the volume. Therefore, volume is equals to mass of a substance divided by its density (Vol= mass/density). Given 12.6 g/ml as density and 7.65 g mass, volume is equals to 0.60714 ml, since 1 ml = 1cm^3, volume is equals to 0.60714 cm^3 then extract the cube root of the volume to get the length of the cube in cm which is equal to 0.84677 cm.




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The period of the system of ladder and woman, T = 2.5 seconds

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The total moment of inertia can be calculated using the equation:

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f = \frac{1}{2\pi } \sqrt{\frac{mgD}{I} } \\f = \frac{1}{2\pi } \sqrt{\frac{48*9.8*1.5}{112.5} }\\f = 0.4

The period of the system of ladder and woman is given by:

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