A(n) _________material has a small positive magnetic susceptibility that approaches zero at zero kelvin, increases with increasing temperature, reaches a maximum, and then is paramagnetic with further increases in temperature.
Fill in the blank(s) with the appropriate word(s).
antiferromagnetic
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A hockey puck traveling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision
a. momentum is conserved. b. angular momentum is conserved. c. energy is conserved. d. all of the above are conserved. e. only momentum and angular momentum are conserved.
The moons of Uranus have been named after ____
a. Roman gods b. Greek goddesses c. characters of Shakespearean plays d. characters of Tennessee Williams' plays e. the Romanoff family children's names
Which of the following statements best describes the two principle advantages of telescopes over eyes?
A) Telescopes can collect far more light with far better angular resolution. B) Telescopes can collect far more light with far greater magnification. C) Telescopes collect more light and are unaffected by twinkling. D) Telescopes have much more magnification and better angular resolution.
If a = 3.0 mm, b = 4.0 mm, Q1 = 60 nC, Q2 = ?80 nC, and q = 36 nC in the figure, what is the magnitude of the electric force on q?
A. 5.0 N B. 4.4 N C. 3.8 N D. 5.7 N E. 0.60 N