The lift experienced by Maglev trains is due to magnetic
A) attraction.
B) repulsion.
C) dipoles.
Answer: B
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An object is placed on an optical bench. A lens with a focal length of 15 cm is placed 30 cm from the object. A diverging lens with a focal length of -10 cm is placed 7.0 cm beyond that
Where is the final image formed, relative to the second lens? A) 45 cm beyond the diverging lens B) 20 cm behind the diverging lens C) 18 cm behind the diverging lens D) 17 cm beyond the diverging lens E) 30 cm beyond the diverging lens
What is solar seismology?
A. the study of the Sun's atmosphere by analyzing waves in the Sun's interior B. the study of the Sun's interior by analyzing waves in the Sun's atmosphere C. the study of the Sun's changing size D. the study of gravitational waves from the Sun
For a polymer filament, the linear coefficient of thermal expansion would be expected to be _____________in the axial direction than in the transverse direction.
Fill in the blank(s) with the appropriate word(s).
A 4-? resistor, an 8-? resistor, and a 24-? resistor are connected together. What is the maximum resistance that can be produced using all three resistors?
A) 288 ? B) 12 ? C) 96 ? D) 36 ? E) 192 ?