Determine the momentum of a 13,000kg semi driving at 30 m/s

390000

Explanation:

The momentum is huge. You wouldn't want this thing to hit you.

Momentum = m*v

m = 13000 kg

v = 30 m/s

Momentum = 13000 * 30

Momentum = 390000 kg m/s

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