apparently the rite answer for the second question was 3 which is L3/T4. apparently the first one is the correct one in the first question. well thanks for helpin out
see that is the question. i posted them as is, without ANY modification and that's the same thing i thght. what does "a" and other variables mean and what are their units. nothing is given.
1) Which of the equations below is dimension-
ally correct?
a. y = (2 m) cos(k x), k = 2 m-1
b. v = v0 + a x
my work for:
a) cos(kx) = 2ym-1
So this would lead to k = (1/x)cos-1(2ym-1)
But i don't know whether the COSINE operation on RHS changes m-1 to any other unit or not. So...