Which would require the greater energy; slowing the orbital speed of a satellite so it crashes into Earth, or increasing the orbital speed so it escapes Earth?
A) slowing down
B) speeding up
C) same each way
Answer: C
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Which of the following is a neutral subatomic particle?
a. neutron b. proton c. electron d. neutron and proton e. electron and neutron
Thin Lenses: A certain slide projector has a lens of focal length 15.0 cm. This lens forms an image measuring 100 cm × 100 cm on the screen when a slide whose dimensions are 50.0 mm × 50.0 mm is being magnified. How far from the lens should the screen be placed?
Fill in the blank(s) with the appropriate word(s).
Capacitance: What charge accumulates on the plates of a 2.0-?F air-filled capacitor when it is charged until the potential difference across its plates is 100 V?
A. 50 ?C B. 100 ?C C. 150 ?C D. 200 ?C
What is the correct electronic configuration for ground state carbon, which has 6 electrons?
A) 1s22s22p2 B) 1s12p1 C) 1s12s22p1 D) 1s12s12p1 E) 1s22s22p4