We have that the value for y is
From the Question we are told that
Relaxed length of 35 cm (0.35 m)
Spring stiffness is 12 N/m.
Glue a 66 gram block (0.066 kg)
Total length is l_t=16 cm
Block during a 0.24-second interval
Generally the equation for the Force of spring of block is mathematically given as
Generally
Generally,Net Force
Generally,Velocity of block
Where
Therefore
Generally the equation for the Velocity of block is mathematically given as
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If the light of wavelength 700 nm strikes such a photocathode the maximum kinetic energy, in eV, of the emitted electrons is 0.558 eV.
so - $KE_{max} = hc/lembda} work
threshold when KE = 0
hc/lambda = work = 1240/900=1.38 eV
b) Kemax = hc/lambda - work = 1240/640 -1.38=0.558 eV
What is photocathode?
- A photocathode electrolyte interface can be used in a photoelectrolysis cell as the primary light-harvesting junction (in conjunction with an appropriate electrochemical anode) or as an optically complementary photoactive half-cell in a tandem photoelectrode photoelectrolysis cell (Hamnett, 1982; Kocha et al, 1994).
- In the case of the former, the electrode should ideally harvest photon energy across the majority of the solar spectrum in order to achieve the highest energy conversion efficiency possible.
- In the latter case, however, the photocathode may only be active in a specific band of the solar spectrum in order to generate a cathodic photocurrent sufficient to match the current generated in the photoanodic half-cell.
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Answer:
infrared, visible and ultraviolet regions.
Explanation:
