Treat the pupil of your eye as a circular aperture of diameter 3.5 mm. Light of wavelength 500 nm is used to view two point sources that are 283 m distant from you
How far apart must these two point sources be if they are to be just barely resolved by your eye, assuming that the resolution is limited by diffraction?
4.9 × 10-2 m
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What observational evidence do we have that eruptions in the centers of galaxies involve magnetic fields?
What will be an ideal response?
A glass block, for which n = 1.52, has a blemish located 3.3 cm from one surface. At what distance from that surface does the image of the blemish appear to the outside observer?
a. 5.0 cm b. 2.2 cm c. 4.1 cm d. 2.7 cm e. 3.3 cm
The equivalent capacitance of the circuit shown below is
a.
0.50 C.
b.
1.0 C.
c.
1.5 C.
d.
2.0 C.
e.
2.5 C.
What are the two geological features that appear to set Earth apart from all the other terrestrial worlds?
A) a dense core and plate tectonics B) mantle convection and a thick atmosphere C) significant volcanism and tectonics D) plate tectonics and widespread erosion