What kind of wrench should be used to tighten engine components such as manifolds and cylinder heads?

"Torque Wrench"

Torque Wrench should be used to tighten engine components such as manifolds and cylinder heads. This is used to apply a precise or specific rotation to open nut bolts and stuff; it was invented by Conrad Bahr in New York City in 1918.

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