A light emitting diode emits light of approximate wavelength 670 nm. What is the band gap?
A)
1.86 eV
B)
4.14 eV
C)
1.80 eV
D)
3.72 eV
E)
2.70 eV
A
Physics & Space Science
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The first eukarya appeared
A) 4.6 billion years ago B) around 3.5 billion years ago C) 4.0 billion years ago D) at least 2.1 billion years ago or perhaps even earlier
Physics & Space Science
A cordless phone operates at 900 MHz. What is the associated wavelength?
What will be an ideal response?
Physics & Space Science
Recovered strain is _____________strain.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
When the equation Ga + Br2 ? GaBr3 is balanced, the total of all the coefficients (both written and "understood") is
a. 4. b. 3. c. 6. d. 7.
Physics & Space Science