Which of these technological advances would make it harder for extraterrestrial life to find us?
A) FM radio
B) color television
C) the Global Positioning Satellite Network
D) cable TV
E) geosynchronous satellites
D
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On a PV diagram, if a process involves a closed curve, the area inside the curve represents
a. internal energy. b. heat. c. work. d. zero.
Using graphical techniques, determine the temperature distribution through the concrete slab shown after one hour. The slab is subjected to 10 W/m^2 of heat at the surface, assuming a constant temperature gradient at the surface.
What will be an ideal response?
Going from medium mass nuclei to a heavy nuclei, the average binding energy per nucleon
A) decreases. B) behaves randomly. C) remains constant. D) increases. E) doubles.
A "double satellite" is launched into space. It consists of a satellite of mass m and another satellite of mass 5m. The connecting mechanism of these satellites is an explosive bolt and a compressed spring, both of negligible mass. The bolt is exploded and the satellites drift apart having been pushed by the spring. When the less massive satellite has moved a distance of 2.5 m from the center of
mass of the double satellite, how far away from it is the satellite of greater mass? a. 3.0 m b. 2.0 m c. 0.50 m d. 4.5 m