explain with one example that frictional force is dirctly proprtional to normal force
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Fractional shortening
By using the formula: (LVEDD - LVESD / LVEDD) x 100 we get the percentage of size differences of the left ventricle as a parameter of how well the left ventricle is contracting itself and therefore reduces the size during systole. Values > 28% are considered to be normal
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As you can see in the figure, the force with which the gold ingot presses against the ground in this situation is just its weight, or mg.
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