A convex lens has a focal length f. An object is placed at a distance between f and 2f on a line perpendicular to the center of the lens. The image formed is located at what distance from the lens?
A) 2f
B) between f and 2f
C) f
D) between the lens and f
E) farther than 2f
E
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Which is a characteristic of Jovian planets when compared to Terrestrial planets?
a. Jovian planets are much larger than Terrestrial planets b. Jovian planets have rocky surfaces c. Jovian planets have no differentiation like Terrestrial planets d. Jovian planets have moons, unlike the Terrestrial planets e. Jovian planets have warmer atmospheres than Terrestrial planets.
Which of the following living organisms most resemble the common ancestor of all life according to genetic testing?
A) bacteria such as E. coli B) organisms living deep in the oceans around seafloor volcanic vents C) plankton that use sunlight as an energy source through photosynthesis D) viruses E) stromatolites
What is the average kinetic energy of an ideal gas molecule at 569°C? (The Boltzmann constant is 1.38 × 10-23 J/K.)
A) 1.74 × 10-20 J B) 5.81 × 10-21 J C) 1.18 × 10-17 J D) 3.93 × 10-19 J
A piano string of density 0.005 0 kg/m is under a tension of 1 350 N. Find the velocity with which a wave travels on the string
a. 260 m/s b. 520 m/s c. 1 040 m/s d. 2 080 m/s e. 4 160 m/s