Caleb rides his horse with a constant speed of 12 miles per hour. how far can she travel in 3 1/2 hours?

the answer is to check all of them! they all apply well at least i think so!

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it

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