Answer:
48 inches
Explanation:
the 4' means 4 feet. the " means inches but the ' means feet. the longest measurment means its the length, so 4 feet converted to inches are 48 inches, giving you your answer. i hope this helps :D
Answer:
Explanation:
∞

ΔT--------(1)
ΔT

By equation (1) and (2)
ΔT=h.4
ΔT
-------(4)
From equation (3) and (4)
So for sphere
→0
Answer:
(a) Aluminum Indium Gallium Phosphide (AlInGaP). Band gap = 1.81eV ≈ 2eV
(b) Gallium Nitride (GaN). Band Gap = 3.4eV
(c) Aluminium Gallium Arsenide (AlGaA). Band Gap = 1.42eV ≈ 2.16eV
(d) Zinc Selenide (ZnSe). Band Gap = 2.82eV
(e) Gallium Phosphide (GaP). Band Gap = 2.24eV
Explanation:
LED's are semi-conducting materials that convert electrical energy to light energy. The light color emitted from the LED depends on the semi-conducting material and other compositions.
The band gap of the semi-conductor determines its wavelength. High band gap semi-conductors emit lower wavelengths which means greater power(UV semi-conducting macterials fall under this category).