The speed of a car is increased uniformly from 11 meters per second to 19 meters per second. The average speed of
the car during this interval is

A 0.0m/s
B 15m/s
C 30.m/s
D 4.0m/s

15 m/s

Explanation:

I got it correct

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