Arubber ball filled with air has a diameter of 24.2 cm and a mass of 0.459 kg. what force is required to hold the ball in equilibrium immediately below the surface of water in a swimming pool? (assume that the volume of the ball does not change. indicate the direction with the sign of your answer.)
as per initial given conditions first we will find the initial potential energy of the feather
now we know that few amount of its initial energy is lost in form of frictional energy loss
so remaining energy will be less than the initial potential energy
so final answer would be
a. ke < 0.0196 j
push the cork underneath using something that's thin and then it won't take as much space and it'll measure a new volume of the cork reads. then you subtract to get to the cork and volume and then divide the mass by the cork and volume and then you have the density of a cork.
i hope this ! have a nice evening.
they usually lose their electrons to the the other element.