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Consider the following. Note: Draw the free body diagram in each case.

(a) Figure (a) shows a sphere of radius r = 21 cm and density of ρ = 3.1 g/cm³ suspended in water. What is tension in the string? (Assume the density of the water is 1000 kg/m³.)

(b) Figure (b) shows a wooden sphere with a diameter of d = 18 cm density ρ = 0.7 g/cm³ held under water by a string. What is the tension in the string? (Assume the density of the water is 1000 kg/m³.)

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