In which regions can the gravitational field strength due to the two planets be zero? Explain. A. None
B. A, B and C
C. A and C
D. B

answer: i don't know the answer good luck

explanation:

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

the ima (higher than 1m) will be greater than the ima with the height of 1m.

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