A musical tone, sounded on a piano, has a frequency of 460 Hz and a wavelength in air of 0.50 m. What is the wave speed?
a. 920 m/s
b. 270 m/s
c. 230 m/s
d. 109 m/s
e. 115 m/s
c
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Power: Which one of the following quantities is equivalent to 1 W?
A. 1 V/A B. 1 ? ? m C. 1 V ? A D. 1 V/? E. 1 A ? s
A ring and a disk both at rest roll down a hill together. Which rolls slower?
A) ring B) disk C) depends on the masses D) both roll at the same speed E) need more information
A 17-mm-wide grating has rulings of 530 lines per millimeter. White light is incident normally on the grating. What is the longest wavelength that forms an intensity maximum in the fifth order?
A) 377 nm B) 352 nm C) 402 nm D) 427 nm E) 452 nm
Two optically flat glass plates, 16.0 cm long, are in contact at one end and separated by 0.0200 mm at the other end
The space between the plates is occupied by oil with index of refraction 1.45. The index of refraction of the glass plates is 1.55. The plates are illuminated at normal incidence with monochromatic light, and fringes are observed. If the dark fringes are spaced 2.00 mm apart, what is the wavelength of the monochromatic light? A) 525 nm B) 475 nm C) 675 nm D) 425 nm E) 725 nm