Lily replicates an experiment that found that the number of calories in a particular food is 50 kcal. she obtained data from
five trials: 50 kcal, 72 kcal, 50 kcal, 12 kcal, and 50 kcal.
which best describes her data results?
accurate
incorrect
invalid
precise

frequency or wavelenth of em radiation in a vacuum

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.

there are no contact forces mentioned on the list of choices that you've provided.

snell's law

refractve index = sin incidence / sin refraction