Resolution: In one particular case, the limiting angle of resolution for an eye is 1.4 × 10-4 rad. What is the minimum separation between two point sources of light that the eye can distinguish if they are at a distance of 40 m from the observer?
A. 2.8 mm
B. 5.6 mm
C. 1.4 mm
D. 8.4 mm
E. 4.7 mm
Answer: B
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Double-Slit Interference: In a two-slit experiment, a third-order bright fringe is observed at an angle of 7.10° away from the centerline. If the wavelength of light is 595 nm, how far apart are the two slits?
A. 1.44 × 10-5 m B. 1.07 × 10-5 m C. 2.12 × 10-5 m D. 2.53 × 10-5 m E. 3.76 × 10-5 m
Perihelion, the near point to the Sun for the Earth in its orbit, occurs in January. In which of the following months is the orbital angular momentum of the Earth the greatest?
a. only in January b. only in July c. in both April and October, but in no other months d. None of the above answers is correct.
A stunt pilot weighing 0.70 kN performs a vertical circular dive of radius 0.80 km. At the bottom of the dive, the pilot has a speed of 0.20 km/s which at that instant is not changing. What force does the plane exert on the pilot?
a. 3.6 kN up b. 4.3 kN up c. 2.9 kN down d. 2.9 kN up e. 5.8 kN down
Claudius Ptolemy discovered that the orbit of Mars is an ellipse
Indicate whether the statement is true or false