A container with no insulation has two compartments. The first compartment is evacuated to zero pressure, and the other contains a compressed gas that is not an ideal gas. Supposed the separation between the two compartments is removed. What type of process is this? A- isobaric
B- isovolumetric
C-adiabatic
D-isothermal

c) up is the direction the magnetic force is acting on the charge.

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