A table tennis ball has actually an average thickness of 0.084 g/cm^3 and also a diameter the 3.8 cm. What force can submerge the ball in water? (density the water is 1 gm/cm^3) a) 1.0 N b) 0.79 N c) 0.52 N d) 0.26
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The thickness of the table tennis ball is 0.084 g/cm^3. This has to be converted in terms of SI units. It is equal to 0.084*10^-3/(0.01)^3 kg/m^3 = 84 kg/m^3. The thickness of water is 1 g/cm^3 i beg your pardon is equal to 1000 kg/m^3. The diameter the the tennis sphere is 3.8...

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The density of the table tennis sphere is 0.084 g/cm^3. This has to be convert in terms of SI units. It is same to 0.084*10^-3/(0.01)^3 kg/m^3 = 84 kg/m^3. The thickness of water is 1 g/cm^3 which is equal to 1000 kg/m^3. The diameter of the tennis ball is 3.8 cm or 0.038 m.

When a ball is submerged in water, the force or resistance is equal to the load of the volume of water displaced indigenous which the load of the ball is subtracted.

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Here, the pressure of resistance is (1000 - 84)*9.8*(4/3)*pi*(0.038/2)^3

=> 0.26 N

To submerge the ball, a pressure equal to the force of resistance needs to be applied, i m sorry is same to 0.26 N

The correct answer is choice d. 0.26 N

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