Abeam of light consisting of wavelengths from 470 nm to 645 nm is directed perpendicularly onto a diffraction grating with 140 lines/mm. (a) what is the lowest order that is overlapped by another order? (b) what is the highest order for which the complete wavelength range of the beam is present? in that highest order, at what angle does the light at wavelength (c) 470 nm and (d) 645 nm appear? (e) what is the greatest angle at which the light at wavelength 470 nm appears? units no units units no units v unitsto (degrees) (a) number [3 (b) numbert4 (c) number tt37.70 (d) number[51.7 (e) numbertt51.7 click if you would like to show work for this question:

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

i think it would be 5