Afloating balloon can be formed when the substance helium is released from a compressed container into a flat rubber balloon. then, the decompressed helium atoms expand and float up, making the rubber balloon expand around them and float with them. what is helium’s state when it does this? liquid solid gas plasma

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?