a piece of glass of density 25000 kg per metre cube weighs 0.0625 kg in air and 0.03 kg in oil what is the density of the oil ??​

British cologoinst admisitrion

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.

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Answernewton's second law,says that when a contant force acts on a massive body, it causes it to accelerate