Suppose you lived on the Moon near the center of the face that we see from Earth. During the phase of new Moon, what phase would you see for Earth? Would it be day or night at your home?
What will be an ideal response?
During the new Moon, it would be nighttime and you would see the phase of full Earth.
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Magnetic Field of a Long Wire: At what distance from a long straight wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of Earth's magnetic field of about 5.0 × 10-5 T? (?0 = 4? × 10-7 T ? m/A)
A. 1.0 mm B. 1.0 cm C. 2.0 cm D. 3.0 cm E. 4.0 cm
Which of the following characteristics describes silicate minerals?
-Silicate minerals contain only silicon. -Silicate minerals make up 8 percent of Earth's crust. -Silicate minerals contain calcite and dolomite. -Silicate minerals contain halite and gypsum. -Silicate minerals contain silicon and oxygen.
A 1-kg chunk of putty moving at 1 m/s collides and sticks to a 5-kg bowling ball that is initially at rest in space. The bowling ball and putty are then set in motion with a speed of
A) 1/4 m/s. B) 1/5 m/s. C) 1/6 m/s. D) none of the above E) not enough information
Volcanic activity is associated with
A) divergent, convergent, and transform boundaries. B) convergent and transform boundaries. C) divergent and convergent boundaries. D) divergent, convergent, and plate tectonic boundaries.