The photons coming from blackbody radiation create a(n) ____ spectrum
a. absorption
b. emission
c. Doppler
d. continuous
e. ionization
d
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Light with a frequency of 8.70 × 1014 Hz is incident on a metal that has a work function of 2.8 eV. What is the maximum kinetic energy that a photoelectron ejected in this process can have?
A) 8.71 × 10-19 J B) 3.11 × 10-19 J C) 1.28 × 10-19 J D) 2.41 × 10-19 J E) 4.52 × 10-19 J
The flat rotation curves of spiral galaxies tell us that they contain a lot of dark matter. Do they tell us anything about where the dark matter is located within the galaxy?
A) Yes, they tell us that dark matter is spread throughout the galaxy, with most located at large distances from the galactic center. B) Yes, they tell us that dark matter is concentrated near the center of the galaxy. C) Yes, they tell us that dark matter is spread uniformly throughout the galactic disk. D) No, we cannot determine anything about the location of dark matter from the rotation curve.
______ navigation is specific to the content webpage being viewed.
A. Primary B. Subsidiary C. Contextual D. Adaptive
A(n) ______ grid layout determines the size of page elements based on a percentage of the screen.
A. adaptive B. contextual C. fluid D. responsive