Answer: it needs to function using energy from sunlight, carbon dioxide from the air and water from the soil.
Explanation:
Answer:
Goal or Field Goal
Explanation:
It is a goal in a sport like hockey or it is a field goal in football.
Explanation:
Given that,
The mean kinetic energy of the emitted electron, 
(a) The relation between the kinetic energy and the De Broglie wavelength is given by :



(b) According to Bragg's law,

n = 1
For nickel, 



As the angle made is very small, so such an electron is not useful in a Davisson-Germer type scattering experiment.