A diffraction grating with 396 lines/mm is illuminated with light of wavelength 343 nm. What is the angular separation between the two second-order bright fringes?
A) 31.5°
B) 15.8°
C) 32.9°
A
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The price of gasoline goes up 6% on Monday night and then goes down 7% today. What is the net percentage change in the price of gasoline from Monday?
A. 1.0% B. 2.0% C. 1.4% D. -1.0%
What are some of the things astronomers can learn about astronomical objects from their spectra?
A. chemical composition B. how fast the objects are moving C. whether a gas or solid or combination, due to the type of spectrum D. All of these choices are correct.
A gas expands as shown in the graph. If the heat taken in during this process is 1.02 × 106 J and 1 atm = 1.01 × 105 N/m2, the change in internal energy of the gas (in J) is how much?
?
?
A. ?2.42 × 106 B. ?1.40 × 106 C. ?1.02 × 106 D. 1.02 × 106 E. 1.40 × 106
What happens to the cyclotron frequency of a charged particle if the radius of its path doubles?
A) It quadruples. B) It triples. C) It doubles. D) It halves. E) It does not change.