Two converging lenses, the first with focal length 40 cm and the second with focal length 331/3 cm, are separated by 10.0 cm. An object of height 6.0 cm is placed 20.0 cm in front of the first lens. What are the size and orientation of the final image?
A. 6.0 cm, upright
B. 6.0 cm, inverted
C. 24 cm, upright
D. 24 cm, inverted
E. 1.5 cm, inverted
D. 24 cm, inverted
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Due to the extremely rapid orbital velocities of material near the center of many galaxies, these galaxies are believed to contain _______________ at their centers
Fill in the blank(s) with correct word
A small object has charge Q. Charge q is removed from it and placed on a second small object. The two objects are placed 1 m apart. For the force that each object exerts on the other to be a maximum, q should be:
A) 2Q B) Q C) Q/2 D) Q/4 E) 0
Why has NASA sent recent orbiters to Mars on trajectories that required them to skim through Mars's atmosphere before settling into their final orbits?
A) It saves money because the spacecraft uses atmospheric drag to slow down rather than needing to carry enough fuel to slow by firing rocket engines. B) It allowed the orbiters to get higher resolution pictures of the surface as it came close when skimming through the atmosphere. C) It allowed the spacecraft to collect samples of the atmospheric gas for return to Earth. D) Each spacecraft also carried a lander, and the lander could only be dropped to the Martian surface when the spacecraft passed through the atmosphere.
The largest shield volcano yet discovered is
A) Maxwell Mons on Venus. B) Kilimanjaro on Earth. C) Olympus Mons on Mars. D) Prometheus on Io. E) Caloris on Mercury.