Suppose we want a satellite to revolve around the earth 5 times a day. What should be the radius of its orbit? (The mass of the earth is 5.97 × 1024 kg, G = 6.67 × 10-11 N ? m2/kg2, and you can neglect the presence of the moon.)
A) 0.690 × 107 m B) 7.22 × 107 m C) 1.44 × 107 m D) 2.11 × 107 m
C
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An ideal air-filled parallel-plate capacitor with horizontal plates has a plate separation of 5.0 cm
If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what are the magnitude and direction of the electric field between the plates? A) 100 N/C downward B) 100 N/C upward C) 40000 N/C upward D) 40000 N/C downward
In recent reports,(315-320,324) overfishing is cited as a cause for species' numerical collapse and possible forthcoming extinction. In b. and c., explain the parallelism or lack of parallelism with fishery management. a. What does this imply about human management of fishery resources? Cite specificinstances and consequences
b. Consider, for example, politicians dealing with mining. c. Consider, for example, politicians dealing with forestry.
Subsurface soil that remains permanently frozen is called
a. a swamp. b. a bogg. c. permafrost. d. none of these.
A motorcycle of mass 100 kilograms slowly rolls off the edge of a cliff and falls for three seconds before reaching the bottom of a gully. Its momentum upon hitting the ground is
A) 1,000 kg m/s. B) 2,000 kg m/s. C) 3,000 kg m/s. D) 4,000 kg m/s. E) 9,000 kg m/.