Of the following energies for photons, which is the least energy that could result in photoelectron production if the work function is 3.77 eV?
a. 2.72 eV
b. 3.19 eV
c. 4.57 eV
d. 6.98 eV
e. 6.53 eV
c
Physics & Space Science
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Reactance: At what frequency does a 10-?F capacitor have a reactance of 1200 ??
A. 13 Hz B. 42 Hz C. 60 Hz D. 83 Hz
Physics & Space Science
A girl throws a stone straight down from a bridge. The stone leaves her hand with speed of 8.00 m/s at a height of 12 m above the water below. How much time does it take for the stone to hit the water?
A) 2.58 s B) 0.95 s C) 1.8 s D) 0.41 s E) 17.3 s
Physics & Space Science
Which of the three curves show the speed of an object that is beginning to experience significant air resistance? 
A. Object U B. Object K C. Object G
Physics & Space Science
The person who expounded the uncertainty principle was
a. Max Planck. b. Albert Einstein. c. Neils Bohr. d. Erwin Schrödinger. e. Werner Heisenberg.
Physics & Space Science