7. a steel marble leaves a 0.87-meter high table with an initial horizontal
velocity of 1.3 m/s. a.) predict the time required for the pool ball to fall to
the ground and b.) the horizontal distance between the table's edge and the
ball's landing location. y = 14t? x=vexet

gravity

explanation:

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