When you replace helium in a balloon with less-dense hydrogen, does the buoyant force on the balloon change if the balloon remains the same size? Explain.
Answer : Step:1 When you replace the helium by hydrogen gas with less density, As we know that Density = mass / Volume Buoyant force is the force exerted by the liquid on the object immersed in liquid. As density decrease the mass also decrease as it is directly proportional. Therefore if less density hydrogen is replaced by helium then the effect of buoyant force is more.