Two slits separated by 0.050 mm are illuminated with green light (l = 540 nm). How many bands of bright lines are there between the central maximum and the 12-cm position? (The distance between the double slits and the screen is 1.0 m.)
a. 1111
b. 111
c. 11
d. 1
e. 11111
C
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Jupiter's "striped" appearance is a result of
A) alternating bands of rising and falling air at different latitudes. B) alternating bands of liquid and gaseous material at different latitudes. C) changes in the atmospheric composition with latitude. D) changes in the strength of Jupiter's magnetic field with latitude.
Engines, including car engines, are rated in horsepower. What is horsepower?
(a) The force needed to start the engine. (b) The force needed to keep the engine running at a steady rate. (c) The energy the engine needs to obtain from gasoline or some other source. (d) The rate at which the engine can do work. (e) The amount of work the engine can perform
The description large somewhat dirty snowball model fits the physical structure of ____________________
Fill in the blank(s) with correct word
The photons coming from an excited gas create a(n) ____ spectrum
a. absorption b. emission c. continuous d. Doppler e. ionization