The purpose of prescription glasses for a near-sighted person is to bring the apparent positions of distant objects
a. to the far point of the eye.
b. to the near point of the eye.
c. to the retina of the eye.
d. none of the above.
a
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Photoelectric Effect: A metal has a work function of 4.50 eV. Find the maximum kinetic energy of the photoelectrons if light of wavelength 250 nm shines on the metal. (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
A. 0.00 eV B. 0.37 eV C. 0.47 eV D. 0.53 eV
Noting the main sequence turnoff mass in a star cluster allows you to determine its
A) radial velocity. B) number of stars. C) distance. D) total mass. E) age.
be modified if the problem were not axisymmetric?
GIVEN
Non-axisymmetric, steady, cylindrical geometry with heat generation and convective boundary
condition.
FIND
(a) Difference equations for the centerline and surface control volumes
SKETCH
The half-life of a muon is 2.2 ?s. How fast is it moving relative to an observer who says its half-life is 4.4 ?s?
a. 0.87 c b. 0.75 c c. 0.97 c d. 0.72 c e. 0.50 c