Treat each of your eyes as a circular aperture of diameter 3.5 mm. Light of wavelength 500 nm is used to view two point sources that are 894 m distant from you
How far apart must these two point sources be if they are to be just resolved by your eye? Assume that the resolution is diffraction limited and use Rayleigh's criterion.
16 cm
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The ____ is 18 years and 11 days long
a. sidereal period b. synodic period c. eclipse season d. Saros cycle e. eclipse year
Torque: A flat circular coil has 200 identical loops of very thin wire. Each loop has an area of 0.12 m2 and carries 0.50 A of current. This coil is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What is the magnitude of the magnetic torque on the coil?
A. 0.25 N ? m B. 0.52 N ? m C. 2.5 N ? m D. 5.2 N ? m
In its lowest quantum state, the energy of a diatomic harmonic oscillator is
A) (1/4)hf. B) (1/2)hf. C) hf. D) 2hf. E) (3/2)hf.
A certain CD-ROM disk can store approximately 6.0 × 102 megabytes of information, where 106 bytes = 1 megabyte. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk?
A) 6.7 × 107 words B) 5.4 × 109 words C) 2.1 × 107 words D) 2.0 × 109 words