E = Total energy of a single photon of incident light
h = Planck’s Constant = 6.63 x 10^-34
f₀ = Threshold Frequency
v = Velocity
threshold frequency.=4.5×10^-7
velocity.=3.8×10^-8
E = 6.63 x 10^-34 x 0.0000045 + 0.5[1 x 3.8e^-7²]
E = 2.9835e-39 + 0.5[1 x 1.4442e-13]
E = 2.984e-39 + 7.220e^-14
E = 7.22e^-14
=======================
12cii)S = ((u + v)/2)t
Where
S = Distance Covered
u = Initial Velocity
v = Final Velocity
t = Time
initial velocity =0m/s
final velocity =15m/s
time =4s
S = ((0 + 15) / 2) x 4
S = (15 / 2) x 4
S = 7.5 x 4
S = 30m
————————————-
15a)
The degree to which a specified material
conducts electricity, calculated as the ratio of
the current density in the material to the
electric field which causes the flow of current.
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