Gravity pulls downward on a rock with a force of 800 n. if you pull upward on the rock with a force of 400 n, what is the total force acting on the rock?

a. 400 n downward
b. 400 n upward
c. 1200 n downward
d. 1200 n upward

that the claims meet official rules.

don't misinterpret the claims

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m