Asub-marine is 300 m horizontally out from the shore and 90 m beneath the surface of the water. a laser beam is sent from the sub so that it strikes the surface of the water at a point 210 m from the shore. if the beam just strikes the top of a building standing directly at the water's edge, find the height of the building.

the height of the building h= 133.37 m

Explanation:

from the figure,

The angle of incidence of water surface is

=45°

angle of reflection is

=70.12°

The height of the building h

h= 133.37 m

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

the area between the graph and the t axis