A260-m-wide river flows due east at a uniform speed of 4.1m's a boat with a speed of 7 5ms relative to the water leaves the south bank pointed in a direction 37 west of north. what is the (al magnitiale and tb) direction ot the bat's velocity relative to the ground? give the direction as the anele of the velocity from due north positive if to the east and nepative if to the west. ld) how long does it take for the boat to cross the river?

0.11 m/s and 0.28 m/s should be correct

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

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