Describe what types of climates are found at both the equator and 30o latitudes. what is air doing in those regions?

What’s #16 asking me and how do i solve it?

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,?

Why did thomson's results from experimenting with cathode rays cause a big change in specific thought about atoms ?