Three slits, each seperated from its neighbor by 0.06 nm, are illuminated by a coherent light source of wavelength 559 nm. the slits are extremely narrow. a screen is located 2.5m from the slits. the intensity on the centerline is 0.05w/m^2. consider a location 1.72 cm from the centerline. (a) draw the phasors, according to the phasor model for the addition od harmonic waves, appropriate for this location.
(b) from the phasor diagram, calculate the intensity of light of this location.

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative