Choose the best answer to the of the following. explain your reasoning with one or more complete sentences.
based on the observational evidence, is it possible that dark matter doesn’t really exist? (a) no, the evidence for dark matter is too strong for us to think it could be in error. (b) yes, but only if there is something wrong with our current understanding of how gravity should work on large scales. (c) yes, but only if all the observations themselves are in error.

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

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,?