9 The center of a 910 kg satellite is 9.9 x 106 m from Earth's center. Satellite's center
answ
Earth's center
Comma
What is the gravitational force between the satellite and Earth?
(Mass of Earth: 5.972 x 1024 kg)
A 4.5 10 N
B 3.7 X 103 N
C 8.9 x 103 N
D 1.7 X 106 N
I

i think they are all correct

explanation:

they seem good

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