Answer the following statement(s) true (T) or false (F)
We can consider the state to be a superposition of
and
states.
TRUE
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Electrons are emitted from a surface when light of wavelength 500 nm is shone on the surface but electrons are not emitted for longer wavelengths of light. The work function of the surface is
A) 5.0 eV. B) 0.60 eV. C) 2.5 eV. D) 4.0 eV. E) 0.40 eV.
An 8.0-kg object moving 4.0 m/s in the positive x direction has a one-dimensional collision with a 2.0-kg object moving 3.0 m/s in the opposite direction. The final velocity of the 8.0-kg object is 2.0 m/s in the positive x direction. What is the total kinetic energy of the two-mass system after the collision?
a. 32 J b. 52 J c. 41 J d. 25 J e. 29 J
When viewing your image in a hand-held mirror, if you move the mirror away at a speed v, the image appears to:
a. also move away at v. c. move away at 2v. b. move away at v/2. d. not move.
Four unequal resistors are connected in a parallel circuit. Which one of the following statements is correct about this circuit?
A) The total resistance is less than the smallest resistor. B) The total resistance is equal to average of the four resistors. C) The total resistance is more than the largest resistor. D) The total resistance is equal to zero. E) None of the other answers is correct.