If, at a given time, the position of a sub-atomic particle is precisely known, then:.a. its velocity cannot be precisely known. b. no other particles can have the same position. c. the time over which it was measured cannot be precisely known. d. the particle will disappear.

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

the part of the wave he is travelling on is the crest

he made 11 calls in one day