1 kilowatt - hour_________________________
Answer:
When a light wave goes through a slit, it is diffracted, which means the slit opening acts as a new source of waves. How much a light wave diffracts<em> (how much it fans out)</em> depends on the wavelength of the incident light. The wavelength must be larger than the width of the slit for the maximum diffraction. Thus, for a given slit, red light, because it has a longer wavelength, diffracts more than the blue light.
The corresponding relation for diffraction is
,
where
is the wavelength of light,
is the slit width, and
is the diffraction angle.
From this relation we clearly see that the diffraction angle
is directly proportional to the wavelength
of light—longer the wavelength larger the diffraction angle.
After x seconds, an object will fall
![\frac{1}{2}at^2](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dat%5E2)
where a is acceleration due to gravity and t is time
so when t=3.3
the distance it will fall is
![(\frac{1}{2})(9.8\frac{m}{s^2})(3.3m)^2](https://tex.z-dn.net/?f=%28%5Cfrac%7B1%7D%7B2%7D%29%289.8%5Cfrac%7Bm%7D%7Bs%5E2%7D%29%283.3m%29%5E2)
=53.361m
it will fal 53.361 meters