What is one example of the use of an infrared sensor?
bar code scanner tracks store inventory
monitoring feed for farm animals to keep them healthy
detecting the presence of humans trapped under collapsed buildings information is relayed to a visually impaired individual about the location of objects

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,?