How has two dogs go awnser my other qestion first one will get anser

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

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,?