Which one of the following cannot be a statement of Gauss's law for some physical situation?
A.
B.
C.
.D.
.E.
.Answer: D
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Which phase of the Moon sets at noon?
A. waxing crescent B. full Moon C. third quarter D. new Moon E. None, the Moon always sets at sunrise.
In the process of pair production, which of the following is a possible product pair?
A) electron-neutron B) proton-neutron C) electron-positron D) proton-positron E) electron-proton
If you add 700 kJ of heat to 700 g of water at 70.0°C, how much water is left in the container? The latent heat of vaporization of water is 2.26 × J/kg and its specific heat is 4190 J/(kg ? K)
A) 429 g B) 258 g C) 340 g D) 600 g E) none
A solenoid of length 18 cm consists of closely spaced coils of wire wrapped tightly around a wooden core. The magnetic field strength is 2.0 mT inside the solenoid near its center when a certain current flows through the coils
If the coils of the solenoid are now pulled apart slightly, stretching it to 21 cm without appreciably changing the size of the coils, what does the magnetic field become near the center of the solenoid when the same current flows through the coils? (?0 = 4? × 10-7 T • m/A) A) 1.7 mT B) 3.4 mT C) 0.85 mT D) 2.0 mT