Which of the following best describes the image of a concave mirror when the object's distance from the mirror is less than the focal point distance?
a. real, inverted, and magnification greater than one
b. virtual, upright, and magnification greater than one
c. virtual, upright, and magnification less than one
d. real, inverted, and magnification less than one
B
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What makes Iapetus different than most other Jovian satellites? a. Its surface is so eroded that it has no distinguishing surface features. b. It is not impacted by Saturn's tidal heating
c. It is perfectly spherical and highly reflective. d. It has an old and heavily cratered surface. e. It is asymmetrical and always faces backward to Saturn.
A polyethylene bar (E 5 1.4 GPa, ? 5 0.4) of diameter 80 mm is inserted in a steel tube of inside diameter 80.2 mm and then compressed by axial force P. The gap between steel tube and polyethylene bar will close when compressive load P is approximately:
(A) 18 kN
(B) 25 kN
(C) 44 kN
(D) 60 kN
At what distance could one theoretically distinguish two automobile headlights separated by 1.5 meters? Assume a pupil diameter of 0.50 cm and yellow headlights seen at the wavelength 5.0 × 10^?7 m. Assume eye fluid has an average n = 1.33
a. 6.0 km b. 12 km c. 9.0 km d. 3.0 km e. 16 km
Distinguish between the terms slit width and slit separation