Which of the following are examples of natural forces?
a)phase
b)optical
c)gravity
d)nuclear

Describe uniform velocity and variable velocity in short

Most short-period comets do not have randomly oriented orbits because

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,?