Alaser with a wavelength of 532 nm is aimed horizontally at a diffraction grating with 580 grooves per mm in a large, dark room. the grooves are oriented vertically. the laser is 2.7 m away from the diffraction grating, while a flat, white wall is 3.9 m behind the diffraction grating. describe what appears on the wall and where.

Sorry i don’t know what to do

Your answer would be false

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)