What is the limiting angle of resolution for a lens of radius 2.0 mm when viewing with light having a wavelength of 600 nm?
A) 1.8 × 10-7 rad
B) 1.3 × 10-4 rad
C) 1.5 × 10-7 rad
D) 1.5 × 10-4 rad
E) 1.8 × 10-4 rad
E
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The absence of oxygen on Mars means that it has very little
a. carbon dioxide. b. methane. c. ozone. d. helium.
A 75-kg swimmer dives horizontally off a 500-kg raft. The diver's speed immediately after leaving the raft is 4.0 m/s. A micro-sensor system attached to the edge of the raft measures the time interval during which the diver applies an impulse to the raft just prior to leaving the raft surface. If the time interval is read as 0.20 s, what is the magnitude of the average horizontal force by diver on the raft?
a.900 N b.450 N c.525 N d.1500 N
Venice italy provides a dramatic example of ____ because of heavy ground water withdrawals
A) water table depletion B) building damage C) ground subsidence D) ground water contamination E) transportation
Resistance and Resistivity: A 25-m wire of diameter 0.30 mm draws 0.499 A when connected across a 3.0-V potential difference.(a) What is the resistance of the wire?(b) What is the resistivity of the material from which the wire is made?
What will be an ideal response?