Question

Did i rearrange this correctly

Answer 1

E=hc/lambda
rearranged to
lambda=hc/E

Answer 2

yeah that re-arrangement is right

Answer 3

-9.69x10^-8 m

Answer 4

almost just knock off the negative sign since we want a length

Answer 5

oh okay wavelength is never negative?

Answer 6

nah, in general length is positive

for example, saying "this pencil is -5cm" is illogical since distances/lengths are always positive

Answer 7

chekcing for broken bones because xray

Answer 8

nvm got it